IBM 02K7028 | Lenovo 10.8V 4400mAh Li-Ion Battery for ThinkPad T20 / 21 / 23

Here are the technical specifications for the IBM Lenovo 10.8V 4400mAh Li-Ion Battery for ThinkPad T20 / 21 / 23:

- Battery Type: Li-Ion
- Voltage: 10.8V
- Capacity: 4400mAh
- Number of Cells: 6
- Color: Black
- Compatible with: ThinkPad T20 / 21 / 23
- Dimensions: 8.19 x 2.12 x 0.79 inches
- Weight: 0.95 lbs

Helpful notes:
1. This battery is a genuine IBM Lenovo product and is designed specifically for the ThinkPad T20 / 21 / 23.
2. The 4400mAh capacity provides a longer battery life compared to the original battery that came with the laptop.
3. It is recommended to fully charge and discharge the battery at least once every month to maintain its performance.