The nickel-metal hydride battery in your cell phone has a 1.2-V emf, and it can be recharged about 1000 times. Manufacturers often rate batteries in milliamphours (mA-h) they can supply between rechargings.
(a) show that the mA-h is a charge unit, and find the conversion factor from mA-h to C.
(b) how much charge can a 1400-mA-h battery supply?
(c) how much total energy can that battery supply between rechargings?