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Batteries & Chargers Discuss Li-P, Li-Ion, NiMh, Nicad battery technology and the chargers that juice 'em up!

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Old 05-23-2006, 05:49 PM   #1
Stig atle steffensen
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Default how long do i charge this battery?

I have a 600mah battery. 4.8V.

the charger says:
4.8V - 70ma

how long do i charge it?
i lost the other battery due to over-charging the guy in the store said (it just would not charge anymore)..
so today i bought a new one, and i dont want to do that again.
that's why i ask here

thanks.

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Old 05-23-2006, 06:13 PM   #2
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Hi Stig
You should charge at that rate for 9 to 10 hrs with no problem. If you have a nicad and Nmth cyler you would be able to check the condition of the pack. Skyvolt 12 ( Kenny)
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Old 05-23-2006, 07:21 PM   #3
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Realistically, since you're charging at 1/10 "C", or the Capacity of the battery, you could leave a NiCD or NiMH battery hooked up for two days without damaging it.

10 hours from empty to full, though. I don't normally empty my NiCD batteries in a day of flying unless I'm using my Tx as a buddy-box. I just slap the Tx on the charger the night before I plan to go flying. About once a month I hook it up to Great Planes Triton charger in order to fully discharge and charge it so that I can make sure it's still keeping a full charge.
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Old 05-23-2006, 08:58 PM   #4
Red Scholefield
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Default

Originally Posted by Stig atle steffensen View Post
I have a 600mah battery. 4.8V.

the charger says:
4.8V - 70ma

how long do i charge it?
i lost the other battery due to over-charging the guy in the store said (it just would not charge anymore)..
so today i bought a new one, and i dont want to do that again.
that's why i ask here

thanks.
Just how long did you have the other battery before you lost it to overcharge? - hardly likely on a 4.8 volt 70 mA charger. The guy in the store probably knows no more about batteries than your pet ant.

Red S. AMA 951
The Battery Clinic
www.hangtimes.com/redsbatteryclinic.html
The older I get, the better I use to fly.
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Old 05-24-2006, 06:52 AM   #5
Stig atle steffensen
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i dont remember how long. but i dont see it to be like over 10 hrs.
it might just be something else that made it like that.
i had to remake the battery a bit to make it fit where it should, and make a longer wire for it,so that it reached where it should.

it could be lots of reasons for why it should stop working,but i think overcharging is a common thing, i dont think he thought about it taking over 10 hrs..

thanks to all of you for the reply, now i know for how long i can charge.

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Old 05-24-2006, 02:02 PM   #6
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Since you have rewired the pack,if you can access each cell,measure each cell with a meter to see if each cell voltage is approx. the same voltage. If not, you may have a shorted cell,also recheck your wiring.
Kenny
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