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Old 04-09-2012, 10:15 AM   #1
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Default Battery left in storage at max capacity.

I sold most of my RC gear last year. I never got a battery sold for some reason and I came across it last night. It's at max capacity and it's been that way for over 8 months. Is there a way I can test this to make sure it's still usable/safe? Or should I just have it disposed?

Stats: 4s 5400 mAh
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Old 04-09-2012, 10:27 AM   #2
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You could try cycling it. Use a light bulb if you have to and monitor the voltage with a multimeter. I'd bet it will work like new with a couple cycles on it.
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Old 04-10-2012, 01:46 PM   #3
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I'd take a voltage reading. I charged some batteries up Saturday morning and never got to use one Saturday. When I went to discharge last night it was at 4.1v per cell, so it had already started to decline. However, when left at 3.8 per cell, it sat there for almost 2 months.
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Old 04-10-2012, 04:27 PM   #4
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If it hasn't puffed it's probably safe to use. But it's likely lost capacity and have higher internal resistance (essentially a lower C, less punch and current/power capability).
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