IBM 02K6534 | Li-Ion Battery for ThinkPad 390

Here are the technical specs for the IBM Li-Ion Battery for ThinkPad 390:

- Battery Type: Lithium-ion
- Battery Capacity: 3600 mAh
- Voltage Provided: 10.8 V
- Compatibility: ThinkPad 390, ThinkPad i Series 1720, ThinkPad i Series 1721
- Dimensions: 5.5 x 3.3 x 0.8 inches
- Weight: 10.4 ounces

Helpful notes:
- This battery is a replacement for the original battery that came with the ThinkPad 390.
- It is important to check the compatibility of your laptop model before purchasing this battery.
- Lithium-ion batteries have a longer lifespan and are more environmentally friendly compared to other battery types.