0A36309 - Lenovo 81+ (6 CELL) Battery for ThinkPad T420S/T420SI/T4

Here are the technical specs for the Lenovo 81+ (6 CELL) Battery for ThinkPad T420S/T420SI/T4:

- Battery capacity: 5.2 Ah
- Battery voltage: 10.8 V
- Battery technology: Lithium ion
- Number of battery cells: 6
- Compatible ThinkPad models: T420S, T420SI, T430S, T430SI
- Battery life: Up to 6 hours (varies based on usage)

Helpful notes:
- This battery is a genuine Lenovo product and is designed to work seamlessly with compatible ThinkPad models.
- The 6-cell design provides longer battery life compared to the standard 4-cell battery.
- It is recommended to fully charge the battery before first use and to use Lenovo's Power Manager software to optimize battery life.