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[FAQ] Аккумуляторы (на англ.) BIG!

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Nov 13, 1999, 3:00:00 AM11/13/99
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Предлагаю всем интересующимся FAQ по аккумуляторам :
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Car Battery FAQ

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The following document is here with the permission of it's author, Bill Darden. Bill's deep cycle battery faq is also available at this site.

Information posted here is to be used at your own risk,as all of the usual disclaimers apply.


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CAR BATTERY FREQUENTLY ASKED QUESTIONS 2.2
November 1, 1998


A word of caution. Batteries contain a sulfuric acid electrolyte which is
a highly corrosive poison, that will produce gasses when recharged and
explode if ignited. This will hurt you--BAD! When working with
batteries, you need to have plenty of ventilation, remove jewelry, wear
protective clothing and eye wear (safety glasses), and exercise caution.
Whenever possible, please follow the manufacturer's instructions for
testing, jumping, installing and charging. This FAQ assumes a six cell,
12 volt negatively grounded system found in most cars, light trucks and
vans.

The technical stuff is in [brackets].


CONTENTS

1. WHAT IS THE BOTTOM LINE?
2. WHY BOTHER?
3. HOW DO I PERFORM PREVENTATIVE MAINTENANCE?
4. HOW DO I TEST A BATTERY?
5. HOW DO I KNOW IF THE CHARGING SYSTEM IS OK?
6. HOW DO I JUMP START MY CAR?
7. WHAT DO I LOOK FOR IN BUYING A NEW BATTERY?
8. HOW DO I INSTALL A NEW BATTERY?
9. HOW DO I RECHARGE MY BATTERY?
10. WHAT IS PARASITIC LOAD?
11. HOW CAN I INCREASE THE LIFE OF MY BATTERY?
12. WHAT ARE THE MOST COMMON CAUSES OF PREMATURE BATTERY
FAILURES?
13. WHAT ARE THE MYTHS ABOUT BATTERIES?
14. WHERE CAN I FIND MORE INFO ON BATTERIES?


1. WHAT IS THE BOTTOM LINE?

A. At the first sign of slow starting, headlights dim at idle,
gauges indicate discharge with engine running at high idle, or your
battery seams to be loosing performance, test it! (See Section 4.)

B. Perform regular preventative maintenance, especially during HOT
weather and before COLD weather, (See Section 3)

C. Remove surface charge before load testing and check the specific
gravity in each cell and the terminal voltage, (See Section 4)

D. Keep the battery charged, but do NOT overcharge, (See Section 9)

E. Buy the freshest and largest Reserve Capacity (RC), battery that
will physically fit with a Cold Cranking Amp (CCA) rating for your climate
that meets or exceeds the car's Original Equipment Manufacturer's (OEM)
cranking amp requirement, and (See Section 7)

F. Retest after deep discharges or jump starts for latent damage.
(See Section 4)


2. WHY BOTHER?

Because only the rich can afford cheap batteries.....

A good quality battery will cost between $50 and $100 U.S. and, if
properly maintained, it should give you an average of five years of
service. The primary purpose of a car battery is to START the engine.
It also is used to filter or stabilize the power and provide extra power
for the ignition, lighting and other accessories when their combined load
EXCEEDS the capability of the charging system, i.e., when the engine is
idling. In addition, a car battery provides power to the electrical
system when the charging system is not operating.

Normally a battery "ages" as the active plate material sheds (or flakes
off) due to the expansion and contraction that occurs during the discharge
and recharge cycles. Deep discharges, heat and vibration accelerate this
"aging" process. Eventually, the sediment builds up and the can short the
cell out. Another major cause of faulty batteries is sulfation. When
batteries are stored discharged or for over six months, lead sulfate makes
the plates very hard and dense and the battery less capable or unable to
be recharged. When the active material in the plates can no longer
sustain a discharge current and the battery "dies". In a hot climate, the
harshest environment for a battery, a recent JCI survey of junk batteries
revealed that the AVERAGE life of a good quality car battery was 37 months.
Slow cranking, especially on a cold day, is another good indication that
your battery is going bad and it should be tested.

Deeply discharged batteries almost always occur at the most inopportune
times, e.g., AFTER you have jump started your car, at the airport
returning home from a long trip, during bad weather, late at night in a
dark parking lot, or when you are late for an appointment. You can easily
spend the cost of a new battery or more for an emergency jump start or
tow.

Most of the "defective" batteries returned to the manufacturer are good.
This suggests that most SELLERS of new batteries do not know how or take
the time to properly test or recharge batteries.


3. HOW DO I PERFORM PREVENTATIVE MAINTENANCE?

Maintaining the correct electrolyte levels, tightening loose hold-down
clamps and terminals, removing corrosion, and checking the alternator
belt tension is normally the ONLY preventative maintenance required for
a battery. The preventive maintenance frequency is dependent upon climate
and battery type, but you should perform at least once before cold weather
starts and once a month in hot weather.

If the electrolyte levels are low in non-sealed batteries, add DISTILLED
water to the level indicated by the battery manufacturer or to 1/8" BELOW
the bottom of the filler tube (vent wells). DO NOT OVERFILL, especially
in hot climates!


4. HOW DO I TEST A BATTERY?

The are four simple steps to test a car battery--inspection, remove
surface charge, state-of-charge test and load test. To test a battery
(or to troubleshoot charging or electrical systems), you will need a
digital voltmeter with .5% or better accuracy. A digital voltmeter can be
purchased at an electronics store and will cost between $20 and $200 U.S.
If you have a non-sealed battery, you can use a temperature compensating
hydrometer which can be purchased at an auto parts store for approximately
$5 U.S.

A. INSPECTION

Visually inspect for obvious problems, e.g., loose alternator belt, low
electrolyte, corroded cable or terminal clamps, loose hold-down clamps or
cable terminals, or a damaged case.

B. REMOVE SURFACE CHARGE

If you have just recharged you battery or driven your car, eliminate any
surface charge by one of the following methods; otherwise, go to the next
step:

1. Allow the battery to sit for two to three hours,

2. Turn the headlights on high beam for five minutes and
wait five minutes, or

3. With a battery load tester, apply a load at one half the
battery's CCA rating for 15 seconds and wait five minutes.

C. STATE-OF-CHARGE TEST

Using the following table, determine the battery's state-of-charge:

Open Circuit Approximate Average Cell
Battery Voltage State-of-charge Specific Gravity

12.65+ 100% 1.265+

12.45 75% 1.225

12.24 50% 1.190

12.06 25% 1.155

11.89 0% 1.120

[If the temperature of the electrolyte is below 70 degrees F (21.1 degrees
C), then add .012 volts (12 millivolts) per degree below 70 degrees F to
the reading.]

For non-sealed batteries, check both the specific gravity in each cell
with a external hydrometer AND the battery terminal voltage with a digital
voltmeter without the engine running. For sealed batteries, measuring the
battery's voltage without the engine running with an accurate digital
voltmeter is the only way you can determine the state-of-charge. Some
batteries have a built-in hydrometer which only measures the
state-of-charge in ONE of it's six cells. If the indicator is clear or
light yellow, then the battery has a low electrolyte level and should be
refilled before proceeding, or if sealed, the battery should be replaced.

If the state-of-charge is BELOW 75% using either the specific gravity or
voltage test or the built-in hydrometer indicates "bad" (usually dark),
then the battery needs to be recharged BEFORE proceeding. Replace the
battery, if one or more of the following conditions occur:

1. If there is a .050 or more difference in the specific
gravity reading between the highest and lowest cell, you
have a weak or dead cell(s),

2. If the battery will not recharge to a 75% or more
state-of-charge level or if the built-in hydrometer still
does not indicate "good" (usually green, which is 65%
state-of-charge or better),

3. If digital voltmeter indicates 0 volts, you have an open
cell, or

4. If the digital voltmeter indicates 10.45 to 10.65 volts,
you have a shorted cell. [A shorted cell is caused by
plates touching, sediment build-up or "treeing" between
plates.

D. LOAD TEST

If the battery's state-of-charge is at 75% or higher or has a "good"
built-in hydrometer indication, then load test the battery by one of the
following methods:

1. Turn the headlights on high beam for five minutes,

2. Disable the ignition and turn the engine over for 15
seconds with the starter motor,

3. With a battery load tester, apply a load equal to one half
of the CCA rating of the battery for 15 seconds, or

4. With a battery load tester, apply a load equal to one half
the OEM cranking amp specification for 15 seconds.

DURING the load test, the voltage on a good battery will NOT drop below
9.7 volts with the electrolyte at 80 degrees F (26.7 degrees C). [If the
electrolyte is above 80 degrees F, add .1 volt for every 10 degrees above
80 until you reach 100 degrees. If below 80 degrees F, subtract .1 volt
for every 10 degrees until 40 degrees.] After the load is removed, wait
five minutes and the battery should "bounce back" to the 50%
state-of-charge level or above. If the battery drops below minimum test
voltage, does not bounce back, or will not start the engine, then you
should replace it. If the battery passes this test, you should recharge
it to restore it to peak performance.


5. HOW DO I KNOW IF MY CHARGING SYSTEM IS OK?

A car's charging system is composed of an alternator (or DC generator), a
voltage regulator, battery and indicator light or gauge. While the engine
is running, it's purpose is to provide power for the car's electrical
load, e.g., ignition, lighting, accessories, etc., and to recharge the
car's battery.

When the charging system fails, usually an indicator light will come on or
the gauge will not register "good". The most common charging system
failure is a loose, worn or broken alternator belt, so check it first. If
OK, then with a known good battery and the engine running at 2000 RPM or
more for two minutes, depending on the load and ambient temperature, the
voltage should increase to between 13.0 and 15.1 volts. Most cars will
measure between 14.0 and 14.5 volts on a warm day. [Most voltage
regulators are temperature compensated to properly charge the battery
under different environmental conditions. As the ambient temperature
decreases, the charging voltage is increased to overcome the higher
battery resistance. Conversely, as the ambient temperature increases,
the charging voltage is reduced. Other factors affecting the charging
voltage are the battery's condition, state-of-charge, electrical load and
electrolyte level and purity.]

If terminal voltage is below 13.0 volts and the battery tests good after
being externally recharged or if you are still having problems keeping it
charged, then have the charging system's output voltage and current and
car's parasitic (key off) load tested. A loose alternator belt or bad
diode will significantly reduce the alternator's current output.

If output voltage is above 15.1 volts with the ambient temperature above
freezing, the battery's electrolyte level is frequently low, or you smell
"rotten eggs" around the battery, then you are probably overcharging the
battery and the charging system should be tested.


6. HOW DO I JUMP START MY CAR?

In cold weather, a good quality booster cable with four to six gauge wire
is necessary to provide enough current to the disabled car to start the
engine. [The smaller the wire gauge number, i.e., the larger the wire
diameter, the better.] Please check the owner's manual for BOTH vehicles
BEFORE attempting to jump start and follow the manufacturer's procedure
because some cars should not be running during a jump start. However,
starting the disabled car with the good car running can prevent having
two disabled. DO NOT allow the booster cable clamps touch each other or
the POSITIVE clamp to touch the frame or engine block.

A. If BELOW freezing, determine that the electrolyte is NOT frozen
in the dead battery. If frozen, allow to thaw BEFORE proceeding. A
discharged battery, i.e., battery voltage or 12.0 volts or less or
specific gravity of 1.140 or less, will freeze at approximately 8
degrees F (-15 degrees C).

B. Without the cars touching, turn off all unnecessary accessories
and lights on BOTH cars, insure there is plenty of ventilation, and put on
some protective eye ware.

C. Start the car with the good battery and let it run for at least
two or three minutes at fast idle to recharge it's battery BEFORE
proceeding.

D. Connect the POSITIVE booster cable clamp (usually RED) to the
POSITIVE terminal on the dead battery. Connect the POSITIVE booster
cable clamp on the other end of the booster cable to the POSITIVE terminal
on the good battery.

E. Connect the NEGATIVE booster cable clamp (usually BLACK) to the
NEGITIVE terminal on the good battery and the NEGATIVE booster cable clamp
on the other end to a clean, unpainted area on the engine block or frame
on the disabled car AWAY from the battery.

F. Let the good car to continue to run at high idle for five minutes
OR MORE to allow the dead battery to receive some recharge and to warm
it's electrolyte.

G. Start the disabled car and allow to run at high idle. If the car
does not start the first time, recheck the connections, wait a few minutes
and try again.

H. Disconnect the booster cables in the REVERSE order, starting with
the NEGITIVE clamp on the block or frame of the disabled car to minimize
the possibility of an explosion.

I. As soon as possible, fully recharge and test the dead battery
for latent or permanent damage as a result of the deep discharge.


7. WHAT DO I LOOK FOR IN BUYING A NEW BATTERY?

Battery buying strategy for use in Canada, for example, is different than
hot climates that you find in Texas. In the colder climates, higher CCA
ratings are more important; whereas, in a hot climate, a higher RC ratings
are more important once the CCA rating has satisfied the OEM cranking amp
requirement.

A. Cold Cranking Amps (CCA)

The most important consideration is sizing the battery's CCA rating to
MEET OR EXCEED, depending on the climate, the car's OEM cranking
requirement. [CCAs are the discharge load measured in amps that a fully
charged battery at 0 degrees F (-17.8 degrees C) can deliver for 30
seconds and while maintaining the voltage above 7.2 volts. Batteries are
sometimes advertised by their Cranking Performance Amps (CA) or Marine
Cranking Amps (MCA) measured at 32 degrees F (0 degrees C) or Hot Cranking
Amps (HCA) measured at 80 degrees F (26.7 degrees C), which are not the
same as CCA. Do not be mislead by CA, MCA or HCA ratings. To convert CAs
to CCAs, multiply the CAs by .8. To convert HCAs to CCAs, multiply HCAs
by .69.]

In hot climates, buying batteries with double or triple the CCA ratings
that exceed the OEM requirement is a WASTE of money. However, in colder
climates the higher CCA rating the better, due to increased power
required to crank a sluggish engine and the inefficiency of the cold
battery. As batteries age, they are less capable of producing CCAs.

One of the major battery manufacturers, Exide, publishes the following
table:

Available Power Temperature Power Required
From Battery degrees F To Crank Engine

100% 80 100%

65% 32 155%

40% 0 210%

25% -32 350%

[If more CCA capacity is required, two (or more) 12 volt batteries can be
connected in parallel. Within a BCI group size, generally the battery
with more CCA will have more plates because a larger surface area is
required to produce the higher current.]

B. Reserve Capacity (RC)

The second most important consideration is the Reserve Capacity rating
because of the effects of an increased parasitic (key off) load and in
emergencies. [RC is the number of minutes a fully charged battery at 80
degrees F (26.7 degrees C) can be discharged at 25 amps until the voltage
falls below 10.5 volts.] More RC is better in every case! In a hot
climate, for example, if your car has a 360 OEM cranking amp requirement,
then a 400 CCA rated battery with 120 minute RC with more electrolyte
would be more desirable than one with 1000 CCA with 90 minutes of RC.

[If more RC is required, two six volt batteries can be connected in series
or two (or more) 12 volt batteries can be connected in parallel. Within a
BCI group size, generally the battery with larger RC will weigh more
because it contains more lead.]

C. Type

The two most common types of CAR batteries are low maintenance
(non-sealed) and maintenance free (non-sealed or sealed). [The low
maintenance batteries have a lead-antimony/calcium (dual alloy or hybrid)
plate formulation; whereas, the maintenance free batteries have a
lead-calcium/calcium formulation.] The advantages of maintenance free
batteries are less preventative maintenance, longer life, faster
recharging, greater overcharge resistance, reduced terminal corrosion and
longer shelf life, but are more prone to deep discharge (dead battery)
failures due to increased shedding of active plate material. In hot
climates, buying non-sealed batteries is recommended because a sealed
battery will NOT allow you to add water when required or to test the
specific gravity with an external hydrometer.

Some manufacturers introduced a third type of car battery, "dual", that
combined a standard battery with switchable emergency backup cells. For
about the same cost a better approach was to buy two batteries and isolate
them.

In the future, you can expect to see more expensive valve regulated (gel
cell and absorbent glass mat (AGM), e.g., Interstate's Extreme Performance,
and Optima, batteries used. This is because car manufacturers want to
extend their "bumper-to-bumper" warranty periods or as the batteries are
relocated from under the hood to avoid temperature extremes. Please refer
to the Deep Cycle Battery FAQ for more information on valve regulated
batteries.

For off road applications in trucks, recreational vehicles (RVs), 4x4s,
vans or sport utility vehicles, some manufacturer's distribute "high
vibration" or RV battery versions designed to reduce the effects of
moderate vibration. For excessive vibration applications, it is best to
buy a commercial or AMG battery.

Car batteries are specially designed for high initial cranking amps
(usually for five to 15 seconds) to start an engine; whereas, deep cycle
(or marine) batteries are designed for prolonged discharges at lower
amperage. A "dual marine" battery is a compromise between a car and deep
cycle battery; however, a CAR battery will give you the best performance
in a CAR. For RVs, a car battery is used to start the engine and a deep
cycle battery is used to power the accessories. [The batteries are
connected to a diode isolator and both are automatically recharged by the
RV's charging system when engine is running. For additional information
on multi-battery applications, call (800) 845-6269 or (503) 692-5360 and
request a free copy of "Introduction to Batteries and Charging Systems" by
Ralph Scheidler.]

D. Size

Manufacturers build their batteries to an internationally adopted Battery
Council International (BCI) group number (24, 26, 70, 75, etc.)
specification, [which is based on the physical case size, terminal
placement and terminal polarity.] The OEM battery group number is a good
starting place to determine the replacement group. Within a group, the
CCA and RC ratings, warranty and battery type will vary in models of the
same brand or from brand to brand. Batteries are generally sold by model,
so the group numbers will vary for the same price. This means that for
the SAME price you can potentially buy a physically larger battery with
more RC than the battery you are replacing, e.g. a 34/78 group might
replace a smaller 26/70 group and give you an additional 30 minutes of RC.
If you do this, be sure that the replacement battery will fit, the cables
will connect to the correct terminals, and that the terminals will NOT
touch the hood when closed.

BCI and the battery manufacturers publish application guides that will
contain the OEM cranking amperage requirements and group number
replacement recommendations by make, model and year of car, and battery
size, CCA and RC specifications. Manufacturers might not build or the
store might not carry all the BCI group numbers. To reduce inventory
costs, dual terminal "universal" batteries that will replace several
group sizes are becoming more popular and fit 75% or more of cars on
the road today.

Battery manufacturers or distributors will often "private label" their
batteries for large chain stores. Below is a list in alphabetical order
of the largest domestic battery manufacturers/distributors in North
America and my understanding of some of their brand names, trademarks
and private labels.

AC Delco/Delphi (800-223-3526 or www.acdelco.com)
DieHard Gold (Sealed) (Contact local Sears store or
www.sears.com)
Double Eagle (Contact local Goodyear store)
Dura Power
Everstart (888-387-8278 or contact local
Wal-Mart store)
Freedom (Contact local Sears store or www.sears.com)
Lastcell (Contact local Trac Auto store)
Professional
Tough One (Contact local Western Auto store or
www.westernauto.com)
Voyager

East Penn (610-682-6361 or www.eastpenn-deka.com)
American
Dominator
Electro
Deka
Hi-Tech
Inferno
Pow-R-Surge
Unitech

Exide (800-782-7848 or www.exideworld.com)
Auto Express (Contact local Wards store)
Centura (Contact local K-Mart store)
Challenger
DieHard (non-Gold) (Contact local Sears store or
www.sears.com)
Edge(Angler's, Arctic, Commander's, Cutting, Mariner's
and Universal)
Heat Guard
Legend (800-538-6272 or contact local NAPA store or
www.napaonline.com)
Max
Mega Cell and Mega Cycle
Motorvator (Contact local K-Mart store)
Muscle Man
NASCAR Select
Nautilas and Nautilas Gold
Power GLX (800-538-6272 or contact local NAPA store or
www.napaonline.com)
Power-Tron
Prestolite (Contact local HiLo store)
Pro Start (Contact local Pep Boys store or
www.pepboys.com)
Quick Start (Contact local Wards store)
Sears (Contact local store)
Sure Start (800-538-6272 or contact local NAPA store or
www.napaonline.com)
Titan
Value-Life (Contact local Firestone store)

Douglas (800-368-4527 or Douglas web site)
Farmland (Contact local store)
Guardian
Omni

GNB (800-242-6750 or www.gnb.com)
American
Action Pack
Champion (Contact local Sams store)
Dominator
Dunlop
High Energy
National
Omaga (800-925-6278 or contact local Wal-Mart store)
Power Breed
Scorcher
Super Crank
Switch
Voyager (Contact local Sams store)

Johnson Controls Inc. (www.jci.com)
Diehard Gold (Non-sealed) (Contact loacal Sears store or
www.sears.com)
Dura-Last (Contact local Auto Zone store or
www.autozone.com)
Energizer (Contact local Target or Wards store)
Equalizer (Contact local Wards store)
Eveready (800-331-9926 or contact local Costco or Wards
store)
Interstate Ameriton, Mega-tron or MT-Plus (800-272-6548
or www.interstatebatteries.com)
Motorcraft Tested Tough (800-392-3673 or contact local
Ford dealer)
Power Connection

E. Freshness

Determining the "freshness" of a battery is sometimes difficult. NEVER
buy a battery that is MORE than SIX months old because it is starting to
sulfate. [Sulfation occurs when lead sulfate can not be converted back to
charged material and is created when discharged batteries stand for a long
time or from excessive water loss.] The date of manufacture is stamped on
the case or printed on a sticker. It is usually a combination of alpha
and numeric characters with letters for the months starting with "A" for
January (generally skipping the letter "I") and digit for the year, e.g.,
"J6" for September, 1996. Like bread, fresher is definitely better.

F. Warranty

As with tire warranties, battery warranties are NOT necessarily indicative
of the quality or cost over the life of the car. Most manufacturers will
prorate warranties based on the LIST price of the bad and replacement
battery, so if a battery failed half way or more through its warranty
period, buying a NEW battery outright might cost you less than paying the
difference under a prorated warranty. The exception to this is the free
replacement warranty period. This represents the risk that the
manufacturer is willing to assume. A longer free replacement warranty
period is better and is usually an indication of the quality of the
battery.


8. HOW DO I INSTALL A BATTERY?

A car battery weights between 30 and 60 pounds, so the first question is
do I want to install it myself? The second question is what do I do with
the old battery if not exchanged for the new one?

A. Thoroughly wash and clean the old battery, battery terminals and
case or tray with water to minimize problems from acid or corrosion.
Heavy corrosion can be neutralized with a mixture of baking soda and
water. Also, mark the cables so you do not forget which one it is which
when you reconnect.

B. Remove the NEGATIVE cable first because this will minimize the
possibility of shorting the battery when you remove the other cable.
Next remove the POSITIVE cable and then the hold-down bracket or clamp.
If the hold down bracket is severely corroded, replace it. Dispose the
old battery by exchanging it when you buy your new one or by taking it to
a recycling center. Please remember that batteries contain large amounts
of harmful lead and acid.

C. After removing the old battery, be sure that the battery tray
and cable terminals or connectors are clean. Auto parts stores sell a
cheap wire brush that will allow you to clean the inside of a terminal
clamps and the terminals. If the terminals, cables or hold down brackets
are severely corroded, replace them. Corroded terminals or cables will
significantly reduce starting capability.

D. Thinly coat the terminal and terminal clamps with a high
temperature grease or petroleum jelly (Vaseline) to prevent corrosion.

E. Place the replacement battery so that the NEGATIVE cable will
connect to the NEGATIVE terminal. Reversing the polarity of the
electrical system will severely damage or DESTROY it or cause the battery
to explode.

F. After replacing the hold-down bracket, reconnect the cables in
reverse order, i.e., attach the POSITIVE cable first and then the NEGATIVE
cable last.

G. Before starting the engine, check the electrolyte levels and
state-of-charge. Refill or recharge as required.

[If you want to retain your car's computer memory, security codes or radio
settings, a second battery can be temporarily connected to the electrical
system in parallel before disconnecting the first one. A cigarette
lighter plug can used to easily connect a parallel battery.]


9. HOW DO I RECHARGE MY BATTERY?

In addition to the earlier cautions, some more words of caution:

A. NEVER, NEVER disconnect a battery cable from car with the engine
running because the battery acts like a filter for the electrical system.
Unfiltered [pulsating DC] electricity can damage expensive electrical
components, e.g., computer, radio, charging system, etc.

B. Check the electrolyte level and be sure it is not frozen BEFORE
recharging.

C. Do NOT add water if the electrolyte is covering the top of the
plates because during the recharging process, it will warm up and expand.
After recharging has been completed, RECHECK the level.

D. Reinstall the vent caps BEFORE recharging, recharge ONLY in well
ventilated areas, and wear protective eye ware. NO smoking, sparks or
open flames because while the battery is being recharged because they give
off explosive gasses.

E. If your battery is sealed, do NOT recharge with current ABOVE 25
amps.

F. Follow the charger manufacturer's procedures for connecting and
disconnecting cables and operation to minimize the possibility of an
explosion, but generally you should turn the charger OFF before connecting
or disconnecting cables to a battery.

G. If a battery becomes hot, or if violent gassing or spewing of
electrolyte occurs, turn the charger off temporarily or reduce the
charging rate.

H. Insure that in car charging with an external charger will not
damage the car's electrical system with high voltages. If this is even a
remote possibility, then disconnect the car's negative battery cable from
the battery BEFORE connecting the charger.

Usually, a when car is jump started, it is run to recharge (or equalize)
the battery. This might NOT fully charge it! The length of time to fully
recharge the battery depends on the amount of discharge, the amount of
surplus current that is diverted to the battery, how long the engine is
run, RPM, and temperature. That is, an alternator is sized by the car
manufacturer to carry the maximum accessory load and maintain a battery--
NOT recharge a dead one.

[For example, if 300 amps are consumed for ten seconds to start a car from
a fully charged battery, it will take the charging system approximately
two and one half minutes to replace the power used if 25 amps are
available to the battery, six minutes at ten amps, or an hour at one amp.
Using the same example with a dead 120 minute RC battery, it would take
approximately 86 times longer to recharge it or three and one half hours
at 25 amps, 8.7 hours at 10 amps, or 86.4 hours at one amp].

If you have added lights, audio amplifiers, alarms, cellular telephones or
other accessories, and "stop-and-go drive occurs frequently, the
alternator might NOT produce enough current to keep your battery fully
charged. You might need to increase the capacity of the charging system.
[Ideally the combined load of all the lights, fans, and accessories
should be less than 75% of the charging system's maximum output, so that
at least 25% is available to recharge the battery.]

A better method to recharge batteries is to use an external constant
current charger which is set not to deliver more than 12% of the RC rating
of the battery and monitor the state-of-charge. For fully discharged
batteries, the following table, published by BCI, lists the recommended
battery charging rates and times:

Reserve Capacity Slow Charge Fast Charge
(RC) Rating

80 Minutes or less 15 Hours @ 3 amps 2.5 Hours @ 20 amps

80 to 125 Minutes 21 Hours @ 4 amps 3.75 Hours @ 20 amps

125 to 170 Minutes 22 Hours @ 5 amps 5 Hours @ 20 amps

170 to 250 Minutes 23 Hours @ 6 amps 7.5 Hours @ 20 amps

Above 250 Minutes 24 Hours @ 10 amps 6 Hours @ 40 amps

The BEST method is to SLOWLY recharge it using an external constant
voltage (or tapered current charger) because the electrolyte has more time
to penetrate the plates. A constant voltage "automatic" charger applies
regulated voltage at approximately 14.4 volts. A 10 amp automatic charger
will cost between $30 and $60 U.S. at an auto parts store. [To prevent
damage to a fully discharged battery, the current should be less than 1%
of the CCA rating during the first 30 minutes.] With a taper charger, a
high current, up to 30 amps, can be applied to non-sealed batteries for a
short period up to 30 minutes maximum and then is regulated downward until
the charge state reaches 100%.

[An excellent automatic constant voltage battery charger is a 15 volt
regulated power supply adjusted to 14.4 volts at 80 degrees F (26.7
degrees C). If 32 degrees F (0 degrees C), then increase the charging
voltage to 15.3 volts, but do NOT recharge a frozen battery. When
charging a maintenance free battery, add .2 volts.]

If left unattended, a cheap, unregulated trickle battery chargers can
overcharge your battery because they can "boil off" the electrolyte. Do
NOT use fast, high rate, or boost chargers on any battery that is sulfated
or deeply discharged. This condition requires a constant current from one
to two amps for 60 to 120 hours. The electrolyte should NEVER bubble
violently while recharging because high currents only create heat and
excess explosive gasses.


10. WHAT IS PARASITIC LOAD?

Parasitic (key off) is the cumulative load produced by electrical devices,
e.g., clocks, computers, alarms, etc., that operate after the engine is
stopped. Parasitic loads typically run 20 to 120 milliamps. To test the
parasitic load an amp meter must be inserted in series with either the
positive or negative battery terminal and it's cable without the engine
running. If the parasitic load is prematurely discharging your battery,
start removing fuses one-at-a-time until the offending electrical
component is identified. Leaving your headlights on will generally
discharge a fully charged battery (with 90 minutes of Reserve Capacity)
in two to six hours.

11. CAN I INCREASE THE LIFE OF MY BATTERY?

A. Keeping your battery and engine well maintained is the BEST way
to extend the life of your battery.

For cold climates, keeping the battery fully charged and the engine warm
will help increase the life of the battery. In the warmer climates and
during the summer, the electrolyte levels need to be checked more
frequently and DISTILLED water added, if required. This is due to the
high underhood temperatures. In a study conducted by the Society of
Automotive Engineers (SAE), the underhood temperature have increased 30%
since 1985. Heat shields are becoming more popular and are being used by
a number of car manufacturers to protect the batteries from the high
underhood temperatures. Some battery manufacturers build "hot climate"
versions by increasing the amount of electrolyte in the battery to provide
more "cooling" or by special plate formulations. Batteries last
approximately two thirds as long in hot climates as cold ones.

B. Add distilled water--NEVER add acid or tap water and DO NOT
OVERFILL.

C. Turning off unnecessary accessories and lights BEFORE starting
your car will decrease the load on the battery while cranking, especially
when it is cold.

D. Leaving your lights or other accessories on and fully
discharging the battery can ruin your car battery, especially if it is
maintenance free. If this should this occur, you should test the battery
AFTER it has been fully recharged to determine if there is any latent or
permanent damage.

E. Reduce the parasitic (key-off) load to 120 milliamps or less.

F. Storing fully charged batteries in cool locations and periodically
recharging when they reach 80% state-of-charge or less OR six month;
whichever occurs first.

G. In cold climates, increasing the diameter (smaller wire gauge) of
the battery cables will increase the power available to the starter motor.


12. WHAT ARE THE MOST COMMON CAUSES OF PREMATURE BATTERY FAILURES?

A. Loss of electrolyte (which account for over 50% of the failures)
due to underhood heat or overcharging,

B. Deep discharges (leaving your lights on),

C. Misapplication or using an undersized battery,

D. Undercharging or loose alternator belt,

E. Excessive vibration (due to a loose holdown clamp),

F. Using tap water,

G. Corrosion, and

H. Freezing.


13. WHAT ARE SOME OF THE MYTHS ABOUT BATTERIES?

A. Storing a battery on a concrete floor will discharge them.

Modern lead acid battery cases are better sealed, so external leakage
causing discharge is no longer a problem. [Temperature stratification
within large batteries can accelerate the internal "leakage" or self
discharge if the battery is sitting on an extremely cold floor in a warm
room or installed in a submarine.]

B. Driving a car will fully recharge a battery.

There are a number of factors affecting alternator's ability to charge
a battery. The greatest factors are how much current from the alternator
is diverted to the battery to charge it, how long the current is available
and temperature. Generally, running the engine at idle or short
"stop-and go trips" during bad weather at night will not recharge the
battery.

C. A battery will not explode.

While spark retarding vent caps help, recharging a battery produces
hydrogen and oxygen gasses. Battery explosions can also occur when the
electrolyte level is below the top of the plates. If a spark or flame
occurs, an explosion will occur. Remember the "Hindenburg"!

D. A battery will not lose it's charge sitting in storage.

A battery has self discharge or internal electrochemical "leakage" that
will cause it to become fully discharged and sulfated over time. Prior to
storing a battery, it should be fully charged, placed in a cool location
above freezing, and recharged when it reaches the 80% state-of-charge
level or once every six months, whichever occurs first. If left in a
vehicle, disconnect the negative cable.

E. Maintenance free batteries never requires electrolyte.

In hot climates, the electrolyte could be "boiled off" due to the high
underhood temperatures . Electrolyte could also be lost due to excessive
charging voltage or charging currents.

F. Test the alternator by disconnecting the battery with the engine
running.

A battery as like a voltage stabilizer or filter to the pulsating DC
produced by the alternator. Disconnecting a battery while the engine is
running can destroy the electronic components, e.g., computers, radio,
stereo, alarm system, etc., or the charging system. Just say NO! if
anyone suggests this.


14. WHERE CAN I FIND MORE INFO ON BATTERIES?

Most of the battery manufacturers have a Battery FAQ posted on their web
sites and addition to product information.

The FAQ , Literature, and Newsgroup Links are here.


Comments are always welcomed by Bill Darden at william...@wcom.com or (214) 361-9567. Copies of the Car and Deep Cycle Battery FAQ's are available from Bill by e-mail or telephone.
--------------------------------------------------------------------------------


--
Best regards

Alexander V Soroka http://www.qis.net.ua
AS106-RIPE

Alexander Litvin

unread,
Nov 13, 1999, 3:00:00 AM11/13/99
to
Sergey Mitrakov <serg...@chat.ru> wrote:
> <al...@qis.net.ua> сообщил в новостях следующее:382d...@go.qis.net.ua...

>>
>> Предлагаю всем интересующимся FAQ по аккумуляторам :

> Не ну я понял что это FAQ полный :-)) Но на английском то нафига. Если
> ты им так классно владеешь, с учетом технических терминов, то и перевести
> мог бы вполне.

FAQ, кстати, неплохой -- коротко, по делу, без лишних теоретических
подробностей, как afair в каком-то из русских факов по аккумуляторам
же, постившихся сюда.

А перевод... Вот так и хочется сказать: $4 за страницу машинописного
текста, и вперед. Человек запостил, а то, что он знает английский, а
ты -- нет, так чья это проблема? А если серьезно -- могу потратить
время и перевести (хотя времени жалко, конечно). Надо?

> Сергей Митраков, Пермь, ВАЗ 2110.

---
Sattinger's Law:
It works better if you plug it in.

Sergey Mitrakov

unread,
Nov 14, 1999, 3:00:00 AM11/14/99
to
<al...@qis.net.ua> сообщил в новостях следующее:382d...@go.qis.net.ua...
>
> Предлагаю всем интересующимся FAQ по аккумуляторам :

Не ну я понял что это FAQ полный :-)) Но на английском то нафига. Если


ты им так классно владеешь, с учетом технических терминов, то и перевести
мог бы вполне.

Сергей Митраков, Пермь, ВАЗ 2110.

Ivan Yakimov

unread,
Nov 14, 1999, 3:00:00 AM11/14/99
to
Здравствуй, Александр!

al...@qis.net.ua записано в статью <382d...@go.qis.net.ua>...


>
> Предлагаю всем интересующимся FAQ по аккумуляторам :

[skip]

Почитал в меру (языка :)), но решил вот уточнить на всякий случай:

У меня батарея Аmerican, на ней написано 770 ССА, это сколько ампер-часов?
Какой уровень электролита должен быть? Она всё время покрывается налётом,
от него контакты и рамка в белом "пухе". Это как я понимаю, от перезарядки.
Я все контакты проверил, реле (РН6 - здоровое, квадратное) выставил на 13
вольт по стрелочному вольтметру (+-1в), не помогает. Где ещё можно
покопать?



> --
> Best regards
>
> Alexander V Soroka http://www.qis.net.ua
> AS106-RIPE

--
Иван, ВАЗ 2121, i...@irk.ru

P.S. Поставил обогрев на заднее стекло. Интересно на сколько хватит? :)

Sergey Mitrakov

unread,
Nov 14, 1999, 3:00:00 AM11/14/99
to
Alexander Litvin <arc...@lucky.net> сообщил в новостях следующее:80l3b3

>
> А перевод... Вот так и хочется сказать: $4 за страницу машинописного
> текста, и вперед. Человек запостил, а то, что он знает английский, а
> ты -- нет, так чья это проблема?

Проблема эта ничья ! Если бы мне захотелось прочитать, я и сам перевел
бы.

>А если серьезно -- могу потратить
> время и перевести (хотя времени жалко, конечно). Надо?

Не надо. Мои знания по аккумуляторам я считаю достаточными, так зачем
еще голову забивать. А если бы там и было бы что нибудь необычное, сильно
продлевающее жизнь аккумулятора - то это было бы давно всем известно. Кстати
аккумуляторы у меня служат лет по пять, и я считаю это вполне достаточно.

Сергей Митраков, Пермь, ВАЗ 2110.

(Я не злопамятный - просто я злой и у меня память хорошая)

Alexander Litvin

unread,
Nov 14, 1999, 3:00:00 AM11/14/99
to
Sergey Mitrakov <serg...@chat.ru> wrote:

>>А если серьезно -- могу потратить
>> время и перевести (хотя времени жалко, конечно). Надо?

> Не надо. Мои знания по аккумуляторам я считаю достаточными, так зачем
> еще голову забивать. А если бы там и было бы что нибудь необычное, сильно
> продлевающее жизнь аккумулятора - то это было бы давно всем известно. Кстати
> аккумуляторы у меня служат лет по пять, и я считаю это вполне достаточно.

А зачем ты тогда вообще отвечал? Так просто, абы чего-то сказать?
Прекрасно, ты умный, у тебя с аккумуляторами проблем нет, ну так что,
это означает, что любая информация по аккумуляторам в конфе является
лишней?

> Сергей Митраков, Пермь, ВАЗ 2110.
> (Я не злопамятный - просто я злой и у меня память хорошая)

---
If you have to ask how much it is, you can't afford it.

m...@redcom.ru

unread,
Nov 15, 1999, 3:00:00 AM11/15/99
to
- Ху из зись, Дринкинс?
- Иц э Ivan Yakimov <i...@irk.ru> вроут:
IY> Здравствуй, Александр!

IY> al...@qis.net.ua записано в статью <382d...@go.qis.net.ua>...


>>
>> Предлагаю всем интересующимся FAQ по аккумуляторам :

IY> [skip]

IY> Почитал в меру (языка :)), но решил вот уточнить на всякий случай:

IY> У меня батарея Аmerican, на ней написано 770 ССА, это сколько ампер-часов?

Где-то под 50. Там если соскоблить наклейку увидишь цыфры выдавленные
прямо в корпусе. У меня 36 и вроде соответствует действительности на
всех моих тестах с разрядом/зарядом. А 770 это пусковой ток при какой-то
температуре. На моем 650. Как ни странно, но эта батарейка заводила
дизель на -30 мороза за 10-15 секунд.

IY> Какой уровень электролита должен быть? Она всё время покрывается налётом,
IY> от него контакты и рамка в белом "пухе". Это как я понимаю, от перезарядки.

Такого нет или почти нет. Уровень за 3 года не менялся и туда я ничего
не доливал хотя плотность у него не ахти какая - 1.25 на полном заряде.
За это я необслуживаемые и не люблю. Был случай, что я его хорошо подсадил
на морозе и он отказался брать зарядку пока в тепло не затащил.

IY> Я все контакты проверил, реле (РН6 - здоровое, квадратное) выставил на 13
IY> вольт по стрелочному вольтметру (+-1в), не помогает. Где ещё можно
IY> покопать?
IY>
Посмотри, может какие медные проводки рядом. У меня все покрылось пухом когда
я подключил провода от сигналки к клемме. Здорово окислилась плюсовая
клемма и потом долго боролся с последствиями (отмывал, зачищал...)

Mag и Хрюша в зимней спячке.
--
Nikolay P. Romanyuk NR42-RIPE | Jedem das seine
Redcom Co. +7 421 2 223367 |

al...@image.dp.ua

unread,
Nov 15, 1999, 3:00:00 AM11/15/99
to
>
> Почитал в меру (языка :)), но решил вот уточнить на всякий случай:
>
> У меня батарея Аmerican, на ней написано 770 ССА, это сколько ампер-часов?
> Какой уровень электролита должен быть? Она всё время покрывается налётом,
> от него контакты и рамка в белом "пухе". Это как я понимаю, от перезарядки.
> Я все контакты проверил, реле (РН6 - здоровое, квадратное) выставил на 13
> вольт по стрелочному вольтметру (+-1в), не помогает. Где ещё можно
> покопать?
>
Скоко-скоко?
Вообще-то надо бы 13.8 - 14.2 В
Алексей Климовский
Кривой Рог
Опель Омега 2.3 ТД


EOF

Sergey Mitrakov

unread,
Nov 15, 1999, 3:00:00 AM11/15/99
to
Alexander Litvin <arc...@lucky.net> сообщил в новостях
следующее:80ngda$4fh$1...@unknown.nowhere.org...

>
> А зачем ты тогда вообще отвечал? Так просто, абы чего-то сказать?
> Прекрасно, ты умный, у тебя с аккумуляторами проблем нет, ну так что,
> это означает, что любая информация по аккумуляторам в конфе является
> лишней?

Что вы товарищь очень саркастично настроены. А если вам хочется устроит
цензуру то добро пожаловать в ФИДО, там можно и плюсики ставить :-)) А также
можете переехать в Белоруссию, там тоже цензоры нужны :-))

> ---
> If you have to ask how much it is, you can't afford it.

Если мне что-то хочется я хватаю это не спрашивая о цене, а потом пачку
денег достаю из широких штанин и просто плачу :-))

Сергей Митраков, Пермь, ВАЗ 2110. ( Все это шутка ! )

Ivan Yakimov

unread,
Nov 15, 1999, 3:00:00 AM11/15/99
to

al...@image.dp.ua записано в статью <AAHpx...@image.dp.ua>...

[skip]


> Скоко-скоко?
> Вообще-то надо бы 13.8 - 14.2 В

Знаю, знаю. А что делать, коли такие явления. Плотность надо померять, а
нечем. Вот и строю догадки... Может попробовать реле установить, чтобы при
включенном зажигании вход регулятора напрямую к генератору цеплялся?

> Алексей Климовский
> Кривой Рог
> Опель Омега 2.3 ТД

--
Иван, ВАЗ 2121, i...@irk.ru

Bourmistrov Pavel

unread,
Nov 17, 1999, 3:00:00 AM11/17/99
to

Sergey Mitrakov пишет в сообщении <80oqbf$uev$2...@second.raid.ru> ...

>Alexander Litvin <arc...@lucky.net> сообщил в новостях


Ругань skipped

Ребят, если я Сократом переведу и сюда брошу - успокоитесь? :-)

"И у черта, и у бога - на одном, видать, счету -
ты - российская дорога - семь загибов на версту!.."

Бурмистров Павел, Москва, FORD SCORPIO '91, DOHC 2.0i


Sergey Mitrakov

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Nov 17, 1999, 3:00:00 AM11/17/99
to
Bourmistrov Pavel <irvy...@df.ru> сообщил в новостях
следующее:80tuik$9ar$1...@prince.dataforce.net...

>
> Ругань skipped
>
> Ребят, если я Сократом переведу и сюда брошу - успокоитесь? :-)

Паша, давно уже успокоились, так что не беспокойся за нас. Я не буду
показывать на флейм "50 км. в день по Москве" :-))))))

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