How would you rate this battery? - RC Groups
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Jan 22, 2006, 09:50 PM
2dogrc's Avatar

How would you rate this battery?

Just finished testing this battery pack. This is NOT a dualsky pack...I would like to see how you guys would rate this battery. I will give you a hint, it is over 10C rated discharge.

I have displayed the 1C test as a baseline and did as high as I could without exceeding the limits of the battery. The next lines are 10, 12, 14, and 15C.

I will post the identity of the cell next Sunday!
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Jan 23, 2006, 12:19 PM
Registered User
The graph implicitly "rates" it, e.d.

C "ratings" should be abandoned, IMO.

- RD
Jan 23, 2006, 01:27 PM
Use the Force!
LBMiller5's Avatar
From the graphs, it looks to me like a 2-cell 830mah 12C battery. Fairly solid 3.5V per cell at 10C, and 3.4V per cell at 12C. Very unstable voltage curve at 14C and total crap-out at 15C.

Jan 25, 2006, 01:22 AM
2dogrc's Avatar
Pretty close guess to what the manufacturer wanted
Jan 25, 2006, 03:36 PM
Registered User
meteor's Avatar
Originally Posted by 2dogrc
...without exceeding the limits of the battery.

Run a few more 14C tests, then run a 1C follow-up test, as that is the truly meaningful result.

If you have capacity loss between the first 1C discharge and the last, you're pushing the cell too hard.

Almost all Li-Po's will give one good "abused" result, and then it's downhill from there!
Jan 25, 2006, 03:58 PM
2dogrc's Avatar
I agree..that was the second 14C run! I will be setting up for some more tests..
Jan 26, 2006, 07:48 AM
Registered User
Folks, if you don't want to wait 'till Sunday ...
Jan 26, 2006, 08:06 AM
Registered User
vintage1's Avatar
I'd rate that as a 10-12C cell.

For decent life, anyway.
Jan 26, 2006, 08:44 AM
2dogrc's Avatar
I couldn't wait! I was going out of town and had to post before I forgot!

Thanx RD.

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