Capacity: 1000mAh Battery Type: Li-ion Voltage: 3.7V Model numbers fit to: TomTom Go 820, Go Live 820, G0 825, Go Live 825, 4ER51, 4ER5.001.01, 4EH52, 4EH51, 4EH45, 4EJ51, 4EJ41, 4ER41, 4ER5 Compatible battery part numbers: VF6M, AHL03711022 RoHS approved for toxic free. CE and ISO9001 Certified for Quality Assurance. Search Tip: Press Ctrl and F keys to prompt a search dialogue box, then type in your device's model number and click 'Find Next'.