Thread Tools
Feb 04, 2004, 08:27 PM
Heli Maniac

How do you tell how many amps you can pull out of a li-poly battery?

I was wounder how to find out how to see how many amps can be pulled out of a battery.
Sign up now
to remove ads between posts
Feb 04, 2004, 08:58 PM
Registered User
Dr Kiwi's Avatar
If you really have to abuse a pack until it explodes in your face, put a Whattmeter in line, connect a Hacker C50 Acro with a 22" prop on it, then, while dutifully recording the amps-in, wait for the fireworks.

Otherwise: Read the manufacturer's recommendations for maximum discharge and follow them!

Cheers, Phil
Feb 04, 2004, 11:54 PM
Nimble with Gimbals
1. Determine "C" rating on pack or cells in question.
2. Determine capacity of said pack or cell.
3. Multiply C times capacity.


Kokam 1500 cells are rated at 8C. 8 times 1500 equals 12 amps so you would prop/gear for 12A at wide open throttle.

Simple, huh?