| Attribute name | Attribute value |
|---|---|
| Battery Capacity | 4000 mAh |
| Type | Battery |
| Features | |
| Compatible products | ThinkPad T420s; T420si |
| Other features | |
| Number of batteries included | 1 pc(s) |
| Battery | |
| Battery technology | Lithium-Ion (Li-Ion) |
| Battery voltage | 11.1 V |
| Number of battery cells | 6 |