Features No memory effect. Chargeable even if it has not been used up yet. Chemistry: Li-Polymer Volts: 3.70V Capacity: 850mAh Dimension : 48mm x 5.5mm x 32 mm Net Weight : 15g Color: Black Compatible with model:APPLE APPLE 3RD GENERATION IPOD IPOD M8976LL IPOD M9244LL IPOD M9245LL IPOD M9460LL