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Battery issue?

Joined
Nov 12, 2016
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Have been getting 'low battery' warning on my ST 10 with a fully charged 5400 battery. First time out after not flying for about 2 months, it flew for about 15 minutes before the warning. Next flight about a month later - warning came after about 5 minutes. Batteries are not that old, however I have kept them almost fully charged which is not good as I understand it. They are a bit puffy but I have other lipo's that I use in my RC Airplanes that are also puffy but never been a problem. Any ideas? I've heard from other forums that the stock batteries that came with the 500 and 500+ were never that great.
I've charged it up on balance and it seems to be holding the charge.
 
Joined
May 10, 2016
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You should store your batteries at storage voltage if not used for more than a week.
Try a few more charge/fly, cycles see if they come back to life.
When not using discharge them to about 3.8 to 3.85 volts per cell.
 

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