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 Battery Care Questions

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Glen B
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PostSubject: Battery Care Questions   Mon Jun 16, 2014 10:25 pm

For you battery experts;

Is it best to fully discharge the battery prior to charging?

If it is the best practice to fully discharge before a charge, do you charge again before storage or only charge within a day, or so, if intended use?

I am sure I am not the only one who would benefit from the answers.

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"Luck favours the prepared!."
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Strato50
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PostSubject: Re: Battery Care Questions   Tue Jun 17, 2014 1:39 am

I'll stick with NiMH batteries because that's all I use for tanks, and what I gather most of us use as well.

They are not AS sensitive to charge / discharge cycles as NiCad or even Lipo batteries are and won't go bad if you top them up a few times in a row, that is to say their charge memory isn't very strong. They CAN develop one however, so a discharge whenever convenient is a good idea.

With storage, again they aren't prone to issues. I don't really store mine fully charged or drained. Charging them up in the days before an event has not given me any issues, and I often leave the batteries half drained inside their tanks for weeks.


One thing I do is to have a rig with a Tamiya plug and two 12v turning signal bulbs hooked up in parallel to quickly drain the batteries down for a full charge cycle. It's faster than the de-charge function on my charging unit, and won't hurt the cells.

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Tiger I - Panzer III - Panzer IV - Chi Nu Kai - STUG III/G - Panther G*
M4A1 Sherman - KV-2 - T-34/85 - M26A1 - SU-76i - M3 Grant..?*

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Freakydude
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PostSubject: Re: Battery Care Questions   Tue Jun 17, 2014 5:25 pm

Read this
http://batteryuniversity.com/learn/article/do_and_dont_battery_table
Pretty good advice.
I never discharge completly my Nimh Batteries and I never over charge them.
I always store them with a full charge and I never leave my batteries in my tanks.
I get home and pop them out, tag them for last use so I know when I pick them up again roughly how much charge they should have
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tomzag
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PostSubject: Re: Battery Care Questions   Tue Jun 17, 2014 9:02 pm

I always leave my battery in the tank and charge them with charging system. 
Here is what i do with different type batteries:
1. NICD, discharge fully before recharge due to its memory effect
2.NIMH, no discharge, it does not have memory effect, do not charge it with over current. it will damage the core. 
3. Li-on, or Lipo, never drain them. no over charge either. very delicate. 

Good charge is a smart investment for rc tanks. Curtis has some nice ones.
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