eForCity 3.7v Premium Replacement Li-Ion Battery for Apple iPod Video 30GB (Gen 5 & 5.5) Keeps the music playing on your 30GB iPod Video with this replacement battery. Comes with the necessary plastic tools to open up your iPod. This is a high capacity, rechargeable Li-Ion (Lithium Ion) battery with premium cell. Voltage: 3.7 V. Dimension: 1.75" x 0.75" x 0.125" [44.45 x 19.05 x 3.175 mm]. Accessory ONLY. iPod not included. Not recommended for 60 / 80GB Video due to its lower battery capacity. Compatible with: Apple iPod Video 30GB (Gen 5 & 5.5)