The 45N1039 / T430S is a 100% brand-new 11.1V 3900mAh (44Wh) Li-ion replacement battery for Lenovo ThinkPad T430S, T430Si, T420S and T420Si slim business laptops. It directly replaces 45N1039, 45N1038, 45N1037, 45N1036, 45N1143, 45N1144, 42T4846 and 42T4847, with OEM-matched connectors, grade-A cells, multi-layer BMS protection and a 1-year warranty.
Product Specifications
| Battery Model: | T430S / 45N1039 |
| Capacity: | 3900mAh / 44Wh |
| Voltage: | 11.1V |
| Battery Type: | Li-ion |
| Color: | Black |
| Condition: | 100% Brand New |
| Warranty: | 1-Year Warranty |
Replace Part Numbers
- 45N1039
- 45N1038
- 45N1037
- 45N1036
- 45N1143
- 45N1144
- 42T4846
- 42T4847
Compatible Models
- For Lenovo ThinkPad T430S Series
- For Lenovo ThinkPad T430Si Series
- For Lenovo ThinkPad T420S Series
- For Lenovo ThinkPad T420Si Series
FAQ
- Q: Does this battery fit the standard Lenovo ThinkPad T430?
- A: No — the T430 uses a different battery pack; this 45N1039 fits the slim T430S, T430Si, T420S and T420Si models only.
- Q: Will it charge with the original Lenovo adapter?
- A: Yes — the 11.1V / 44Wh rating matches the original specification, and the BMS fully supports Lenovo charging and power management.