Hi everyone, I was wondering if someone could work this out .
I have a video camera that uses 9.3 volts and 6.4 watts.
My battery is 1250mAh

Any formula to work out how long the battery will last for at 6.4 watts?

Also is 1250 mAh the same as 1.25 Ah?

Thanks alot.

 

Watts Law. Power = current times voltage. P=IE
6.4/9.3=amps
1.25 amp hours divided by amps = hours

1250 milliamp hours is the same as 1.25 amp hours.

 

I=P/E
I=6.4 / 9.3 = .688A
1.25Ah / .688A = 1.8hour

 

Great thanks alot.