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Battery issue?

Joined
Nov 12, 2016
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Age
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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.
 
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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