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500 Class Electric Helicopters 500 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


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Old 04-15-2011, 03:45 PM   #1
ginger-air
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Default battery voltages & charge

I have a 2500 mAh lipo and a 3000 mAh lipo, how much charge should they be taking (in mAh) after a flight a what's a safe voltage to drop to?
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Old 04-15-2011, 05:24 PM   #2
Deet
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you want to stick to less than 80% of the capacity of a lipo

so on the 2500, stay below 2000

on the 3000, stay below 2400

What you want to do is time a few flights and see what you draw from a pack in that time, then you can work out a safe max flight time for the packs you have.

You dont want to drop below 3.3Volts per cell, but you cant measure that in flight.
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Old 04-15-2011, 05:24 PM   #3
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you dont want to go any lower than 80%

so on the 3000 thats 2400mah back in
and on the 2500 its 2000mah back.

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Old 04-15-2011, 07:21 PM   #4
Larry227
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To do the 80% rule calculation take any battery size and multiply by 0.8

ie; 3000 x 0.8 = 2400
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