Battery for Sharp MD M25 / M20 Walkman and MP3 players Replaces Batteries: AD-BM11 AD-M20BT B-8707 BBB1130 MLVM20 SH-L315A SHL315A UR-110 Battery Type: Li-ion Voltage: 3.60 V Capacity: 1500mAh 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. Colour: BLACK Compatable with original chargers and OEM equipment. Fits Sharp WALKMAN MD PLAYERS SHARP MD-M25 SHARP MD-M20 and others