Lenovo 42T4847 | 66+(6 CELL) Battery for ThinkPad T4

Technical Specs:
- Battery type: Li-Ion
- Battery capacity: 5200 mAh
- Battery voltage: 10.8 V
- Number of cells: 6
- Compatible devices: ThinkPad T410, T420, T510, T520, W510, W520, L410, L412, L420, L421, L510, L512, L520
- Battery life: Up to 5 hours

Helpful notes:
1. This battery is a great replacement option for your ThinkPad T4 if you need longer battery life.
2. It is important to fully charge and discharge the battery at least once every few weeks to maintain its health.
3. Keep in mind that the battery life may vary depending on your usage and settings.