VINTRONS Rechargeable Battery 550mAh For iPOD iPod G5 30GB MA002LL/A, iPod U2 30GB MA664, iPod G5 30GB MA146DK/A Capacity: 450mAh / 1.67Wh Type: Li-Polymer Volts: 3.7V Size : 46.18 x 19.08 x 5.40mm