Touch one end of the battery to the lead spot, on the bulb.
Touch the other end of the wire to the other end of the
battery. If the bulb lights, the battery is OK. Works for
AAAA through D cells. Have to bend the wire a bit, for
different sizes.
After using this for a while, you can also roughly guess the
battery state. New, used, weak, dead. By how bright the
light is. If using a PR-4 bulb, you can also test 3 volt
lithium photo batteries.
--
Christopher A. Young
Learn more about Jesus
www.lds.org
.
No shit Sherlock. You are really telling me that if you put a bulb
across a battery and it lights that the battery is ok? That's amazing.
Your daddy was some guy!
<heh> And report back after your eyes start working again.
--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
---^----^---------------------------------------------------------------
Old fashioned light meter:-
Open your eyes, if you can see it is light. If you can't see it is dark.
Hardly scientific ... guess by how bright the light is?
A load test must also include a voltmeter and some knowledge to be a real
test.
But, your Dad certainly understood an important fact: A cell or battery
must be loaded to evaluate its condition.
> Hardly scientific ... guess by how bright the light is?
Reminds me of the very first camera I ever bought (no idea what brand it
was). The 'exposure metering system' on it was an eyepiece you looked
through and saw a piece of film with the numbers 1 to 10 in rows (white on a
black background). As the numbers increased, they got darker until you
couldn't see the next one. That was the number to set the exposure ring on!
Not sure what branch of the sciences this was based on (witchcraft maybe?)
but it didn't work, I do remember that...
Paul
On 3/19/09 10:41 AM, in article gptp2s$1dd$1...@aioe.org, "Just Me"
<nos...@here.invalid> wrote:
Or, at night, in a dark room listening to The Doors and smoking whacky weed.
Tell your friend "Hey, I dropped the pipe, could you turn on that table
lamp?
Amazing results!
Somewhat less effective with alkaline batteries.
--
Christopher A. Young
Learn more about Jesus
www.lds.org
.
<sligoNo...@hotmail.com> wrote in message
news:97kas4p2ridvfg5j6...@4ax.com...
Many times you can get a good estimate without load.
A rechargable is best tested by
a very loooong test.
greg
Just measuring the no-load voltage on these will give a fair
estimate.
greg