| General | Part number | 57Y4545 |
| Description | ThinkPad Battery 27++ (9cell) | |
| Power management | Battery type(s) | 9 Cell Lithium-Ion |
| Battery | Battery Types | 9 Cell Lithium-Ion |
| Battery Voltage | 11.1 V | |
| Power | 8.4 Amp/Hr | |
| Limited warranty[7] | Limited warranty period | One year |
| Technical Information | Supported Software Applications | ThinkPad T410, T410i, T420, T510, T510i, T520, T520i, W510, W520, ThinkPad External Battery Charger (40Y7625) |
| Environmental Information | Maximum Operating YYYY | 95 % |
| Maximum Operating Temperature | 35 C | |
| Minimum Operating HumidityXXX | 8 % | |
| Minimum Operating Temperature | 5 C | |
| Architecture | Depth Metric | 102.89 mm |
| Height Metric | 28.72 mm | |
| Height US | 1.13 in | |
| Weight Metric[2] | 0.62 Kg | |
| Weight US[2] | 1.35 lbs | |
| Width Metric | 304.94 mm | |
| Width US | 12 in | |

