iPod replacement battery for 1st and 2nd generation Apple iPods - Extended Replaces Apple Batteries: UP325385A4h UP325385A5h M8541 CS-ipod1XL AIP-115L1 CA0143 Battery Type: Li-ion Battery Voltage: 3.70 V Battery Capacity: 2200mAh (replaces Apples original 1200mAh battery to give more fuel in the tank) MY AH RATING IS DIFFERENT? The AH (Amp Hour) Rating is the storage (or fuel) of the battery, the higher it is the longer the battery lasts between charges, bit like petrol in your car so a higher or lower one makes no different to the performance, just the length of time you can use the tool for. Compatable with original chargers and OEM equipment. Colour: N/a Fits iPod 1st and 2nd generation: 1st generation old style iPod 2nd generation style iPod