How Many Watt Hours In A Cell Phone Battery. 37VX2000 ma 74Wh power consumption This gives us the batterys full charge without loss -- 74Wh which translates to about 00074 KWH for our daily use. With 90 Power efficiency for Li-ionLiPo batteries.
An example of this would be that the Yeti 400 contains a 33 Amp Hour battery operating at 12 Volts. If you are using a different voltage battery the amp-hours will change by. AboveAs you can see the multiplication of Amphours is a constant 4000mAh.
If the capacity of your battery is expressed in milliampere hours mAhlike in the image above you will need to divide by 1000 to calculate the ampere-hours Ah before multiplying.
The battery capacity is equal to 22 Ah. To be specific your iPhone battery holds a charge of 1440 mAh or about 545 watt hours. The power absorbed by the battery over a period of 3 hours is Therefore average current. 12 Volts x 33 Amp Hours 396 Watt Hours or roughly 400 Wh.
