#### lumen aeternum

##### Enlightened

- Joined
- Sep 29, 2012

- Messages
- 816

So the 7500 mAh is a bald faced lie?29.6 Watt Hours divided by 11.1 (3S nominal Volts) = 2.666 Amp Hours. It does not appear to be anywhere near 7500 mah. I have found that many add the number of cells in Serial and also add the number of cells in Parallel when the pack is only 1P. It looks like that's what they have done here.

Is there some way of adding things up that gets that result?

W = A x V so

The 29.6 Watt hours is the total of 12 cells at 2.7 volts?

Nee to series stack 3 cells to get desired voltage,

therefore 12/3 = 4 parallel stacks, so 29.6/4 = 7.4 Ahr = 7400 Mah ?

Doing it another way gives me a different answer, but I gotta go to bed.

I always end up trying to do this stuff when exhausted.

? The pack is three batteries in parallel,

where each battery is a series stack of

3 x 2.7 volt cells, so outputs 11.1 volts.

And 3 x 889 mAH cells = 2.66 Ah for the stack?

So 3 x 2.66 Ah in parallel = nearly 8 Amps at 11.1 volts steady, and something more instant?

Don't understand "when the pack is only 1P."

On the label, is 40C a charge rate, or the temperature at which the pack was rated?