AA batteries
Smoothy
I have a Nikon CP2100. It came with two rechargable NiMH batteries.
Nikon says (in the camera manual) that other than this rechargable battery,
only CRV3 lithium and
LR6 nickle-manganese batteries may be used with the camera.
My question is that do you think it's Ok if I use normal Alkaline AA
batteries in the camera
in emergency cases or as a back-up?
(like when my rechargable batteries run ou of charge and I don't have access
to the recharger)
I'd appreciate your comments.
--
SleeperMan
Sure, why not. This is said only for commercial purposes, as always. They
say use only their batteries as others can damage equipment etc... It's just
that Alkaline batteries will give you very small amount of shots - i would
say 30-40 with flash, more if you don't use it. It's generally best to use
two sets of MiMH packs, so you have one in spare. Anyway, manual says that
you can use Nickle-manganese batteries, which are alkaline ones in fact.
Just don't use carbon - normal ones, since you will make one or two shots
only.
Alex
per set) at i also bougth a niMh charger (at 20 euro) well they last
very long!!!!!(quite 90 phtoto per set of batteries 90*3=270 photo!! a
lot you will newer remain without power.
Smoothy
Now I got the point.
--
"Smoothy" <bigvahid...@hotmail.com> wrote in message
news:flFNa.3656$NW1.5...@news20.bellglobal.com...
Smoothy
Charging other brands of rechargeable batteries with my Nikon MH-70 charger.
Actually I want to avoid spending on buying a new charger, just because I
have an extra
set of rechargeable batteries.
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"SleeperMan" <too.s...@home.net> wrote in message
news:uTFNa.16$2B6....@news.siol.net...
Smoothy
camera?
(EN-MH1)
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"Alex" <ci...@bo.it> wrote in message news:3F07F562...@bo.it...
SleeperMan
> What about this scenario:
> Charging other brands of rechargeable batteries with my Nikon MH-70
> charger.
>
matters is charging current and thus charging time. Generally charger
charges with certain current for determined time and after that lowers
charging current. You canleave batteries in for days in this state, as
current is only so small that keeps batteries charged.
You chould consider this if you are about to buy batteries with greater
capacity than orginal ones.
But why don't you tell me capacity of original batteries, charging time and
current if you know (maybe it's written on the charger). That way i'll be
more specific.
Kong
"Smoothy" <bigvahid...@hotmail.com> wrote in message
news:flFNa.3656$NW1.5...@news20.bellglobal.com...
Smoothy
- the batteries are 2000 mAh
- the charger output rating is 1.2 V, 1.0 A x2
- the charging time is 2.5 to 3 hours
Do you call this a fast or slow charger?
--
"SleeperMan" <too.s...@home.net> wrote in message
news:K_XNa.43$2B6....@news.siol.net...
Smoothy
--
"Kong" <kon...@pc.jaring.my> wrote in message
news:beamff$mb8$1...@news6.jaring.my...
SleeperMan
> Sure I'll tell you:
> - the batteries are 2000 mAh
> - the charger output rating is 1.2 V, 1.0 A x2
> - the charging time is 2.5 to 3 hours
>
> Do you call this a fast or slow charger?
>
It's fast charger, but in this case it's definitely smart one, so you can
safely buy another set of battteries.
I'm sure it has some sort of light on and it changes color or flashes
different when charge is complete, right?
Just to be sure, i think it's best if you buy 2000 mAh ones since old ones
are 2000 mAh and you don't have to worry about it. Just make sure you buy
some good brand and not some no-name cheap ones.(well, if you can find 1800
mAh for cheap, it's as good and you can safely use and charge them). Anyway,
i think best you can find now is 2100 mAh but i think that price is too big
and it's just not worthed to pay that extra money for just a little extra
capacity.
Smoothy
When it flashes it's charging, when it's continuously on the charging is
complete.
And I always removre the batteries from the charger right after the charge
is complete.
So as you said, I think there would be no problem if I use another set of
rechargeables on it.
Thanks a lot for your help. :)
--
"SleeperMan" <too.s...@home.net> wrote in message
news:qYgOa.73$2B6....@news.siol.net...
SleeperMan
> Yes, there is a light on the charger:
> When it flashes it's charging, when it's continuously on the charging
> is complete.
> And I always removre the batteries from the charger right after the
> charge is complete.
> So as you said, I think there would be no problem if I use another
> set of rechargeables on it.
>
> Thanks a lot for your help. :)
>
No problem at all. Also you can easily leave batteries in the charger when
charging is finished, since then so-called trickle charging begin.
Generally, with fast charging batteries can't be fully charged, because they
become too hot before they are full, so charging stops. To achieve full
possible charge, slow charging must continue, so if you leave batteries in
over night, you'll get some more power out of them, since they need a few
hours of slow charging afterwards. Try once and see. Maybe the difference
will be small (i would say about 10 %), but it should be.
Final thing - it's good to fully discharge them from time to time, so that
camera dies completely. This will keep full capacity of batteries, since
otherwise memory effect can occure (batteries looses capacity over time).
Jorge Alvarez
> are 2000 mAh and you don't have to worry about it. Just make sure you buy
> some good brand and not some no-name cheap ones.(well, if you can find
1800
> mAh for cheap, it's as good and you can safely use and charge them).
Anyway,
> i think best you can find now is 2100 mAh but i think that price is too
big
> and it's just not worthed to pay that extra money for just a little extra
> capacity.
My local Walmart sells a pack of 4 Energizer 2100mAh batteries for $10.74
and a set of 4 "Digital" brand 1800mAh for $6.34
Cheers,
-Jorge
Smoothy
Yes you are right, the batteries get really hot after 3 hours of charging.
One good point of having a pair of extra batteries is that you can always
use up the first
pair completely (exhust them) and then use the next pair; this way the
batteries are always
used in their maximum capacity.
T N X.
--
"SleeperMan" <too.s...@home.net> wrote in message
news:jFkOa.80$2B6....@news.siol.net...
Jorge Alvarez
Batteries used to get really hot on my Rayovac PS4 1-hour charger. I put a
small fan blowing air onto the charger, and now batteries come out barely
warm after a full charge.
Cheers,
-Jorge
Alex
My batteries bought in italy are "hanel"
how much do 2000maH batt cost in America?
Smoothy
(Optex, Energizer, Panasonic, Duracell)
Did you try to charge your Hanel batteries in the Nikon charger?
I'm curious to know if they charge faster/slower in it?
--
"Alex" <ci...@bo.it> wrote in message news:3F0AD4B8...@bo.it...
SleeperMan
Yes, i know that 1 hour charger make batteries get quite hot. But that's
more or less normal for such quick charging. Also you should bear in mind
same warning as it goes for Smoothy - in such short time batteries are NOT
fully charged - i would say that in 1 hour they have about 60-70% of charge.
In order to get full charge, you must leave them in the charger of several
hours after quick charge has ended.
Alex
nikon charger they last much less. I don't know why. So i tried to buy
another charger (GBC charger for max 4 nimh batt) it thakes quite an
hour more to charge but the batteries last longer, much longer!
so now in 3,5 - 4 hours i charge 4 batteries, perfect for me.
SleeperMan
> well, they charged in the same time but if i charge the batteries in
> the nikon charger they last much less. I don't know why. So i tried
> to buy another charger (GBC charger for max 4 nimh batt) it thakes
> quite an hour more to charge but the batteries last longer, much
> longer! so now in 3,5 - 4 hours i charge 4 batteries, perfect for me.
>
>
really measure charge of the battery, but instead it's calculated, how much
time must charger be on, after that it switches off. In this case, only way
to get full charge is to leave batteries in the charger over night, and so
they will slowly get full charge. Try and you'll see.
But, at the end, if you quick charge, it's not very wise to have time-set
charger, as you can easily put only half-empty batteries(or those with
smaller capacity) in and then they will overcharge and so you risk to
destroy them. It's better to buy another charger, which has so-called
delta-peak function - this measures real state of charge and it's not time
based.
Or antoher option, if you're not in a hurry, get slow 14 hours charger and
charge overnight...
Tesselator
"SleeperMan" <too.s...@home.net> wrote in message news:NHCOa.93$2B6....@news.siol.net...
Yeah, I think he was trying to tell you that you can improve the
increae the battery life (from purchase to trash can) if you'll
somehow cool the batteries durring a quick charge. Which is
true by the way. You can as much as tripple or quadrouple the
battery life by cooling. A focused collumn of air is as good as
any I guess for a home made self-rig.
Tesselator
"SleeperMan" <too.s...@home.net> wrote in message news:GRWOa.124$2B6....@news.siol.net...
> <ci...@bo.it> wrote:
> > well, they charged in the same time but if i charge the batteries in
> > the nikon charger they last much less. I don't know why. So i tried
> > to buy another charger (GBC charger for max 4 nimh batt) it thakes
> > quite an hour more to charge but the batteries last longer, much
> > longer! so now in 3,5 - 4 hours i charge 4 batteries, perfect for me.
> >
> >
> I would say this happens because this charger is time-set
No. not time based. It charges to a specific ampreage. So if
the charger is for 600mAh batteries (or whatever) and you put
in 1200mAh batteries it will charge till the back current load
is about 600mA and then trickle charge until removed.
Since the lithium and nickel battery carge cycles (time:charge) are
actually logarithmic as opposed to linear my example above will
result in a bettery that is only about 40% of what is considered
to be a "full charge".
SleeperMan
Agreed. Battery packs all have thermal sensor installed to measure
temperature while charging. Problem is only here, because batteries are not
bundled in packs and so temp sensor is not there. That way is either you get
slow charger or like you say, force cool them.
SleeperMan
NiCD and NiMH batteries are charged with constant current. If charge time is
about 2 hours, and capacity is 2000mAh, then current is about1,2 - 1,4 A.
Then timer is set to switch off after 2 hours. But current must remain
constant. However at better chargers voltage is measured. Voltage rises
during chargind. But just when they are fully charged it drops for a few mV
and this drop is sensed by better chargers. So, if batteries with more
capacity are less charged when finished, then charger is time based and
switches off after pre-set time, regardless of voltage, while current MUST
be constant.
But, at LEad acid battery is exactly opposite - charging is made with
constant voltage (13.8 V for car accu) and current is measured until it
drops under certain value.