VINTRONS Rechargeable Battery 1000mAh For TomTom AHL03711022, Go 820, 4EH51, VF6M, 4ER51, Go Live 820, 4EJ51 Capacity: 1000mAh Type: Li-ion Volts: 3.7V Size : 43.80 x 35.80 x 6.70mm