Insten 1100mAh Battery for 15 GB/20 GB/30 GB/40 GB iPod 3G Keep the music playing on your iPod with this replacement battery. This is a high capacity, rechargeable Li-Ion (Lithium Ion) battery with premium cell. Screwdrivers included: Philips head (+), Slotted head (-). Voltage: 3.7 V. Weight: 2oz. Dimension: 1.8 Keep the music playing on your iPod with this replacement battery. This is a high capacity, rechargeable Li-Ion (Lithium Ion) battery with premium cell. Voltage: 3.7 V. Weight: 2oz. Dimension: 1.8 x 1.25 X 0.13 inches Note: A technician is recommended for battery installation. Our company is not responsible for any damage caused by installation of this accessory. Compatible With Apple: iPod 3rd Gen. 10GB/15GB/20GB/30GB/40GB.