Description
Product Information
- Item Condition: Brand New
- Color: Black
- Capacity:3900 mAh / 44 Wh
- Output Voltage (Volts):11.1 Volts
- Number of Cells:6 Cells
- Package Included: 1 x Battery for Lenovo
- Warranty: 12 Months / 30-Day Return
Compatible Part Numbers (not all):
Lenovo 0A36287,Lenovo 0A36309,Lenovo 42T4844,Lenovo 42T4845,Lenovo 42T4846,Lenovo 42T4847,Lenovo 45N1036,Lenovo 45N1037,Lenovo 45N1038,Lenovo 45N1039,Lenovo 45N1065,Lenovo 45N1067,Lenovo 45N1143,Lenovo 66+,Lenovo 81+…
Compatible Model Series (partial list):)
Lenovo ThinkPad T420s
Lenovo ThinkPad T420si
Lenovo ThinkPad T430s
Lenovo ThinkPad T430si Series…
Premium 44Wh 81+ Battery for ThinkPad T420s & T430s Series
Revive your slim professional laptop with the 81+ (45N1038) high-quality replacement battery. Engineered specifically for the lightweight ThinkPad T420s and T430s chassis, this 6-cell battery balances portability with a reliable 44Wh capacity. Designed to integrate seamlessly with Lenovo’s power management, it ensures your “s” series flagship stays mobile and efficient.
Technical Specifications
| Part Number | 81+ / 66+ / 45N1038 / 45N1036 / 0A36309 |
| Voltage | 11.1 Volts |
| Capacity | 3900 mAh / 44 Wh |
| Cell Configuration | 6-Cell Premium Li-Ion |
| Condition | Brand New |
| Warranty | 12 Months / 30-Day Return |
Verified “Slim” Series Compatibility
Note: Only for ‘s’ models. Does NOT fit standard T420 or T430.
Compatible Laptop Series:
- ThinkPad T420s
- ThinkPad T420si
- ThinkPad T430s
- ThinkPad T430si
Replacement Part Numbers:
- 81+ / 66+
- 45N1036 / 45N1037 / 45N1038
- 45N1039 / 45N1065 / 45N1067
- 0A36287 / 0A36309
- 42T4844 / 42T4845 / 42T4847
Why Choose the 81+ Battery?
- Precision Slim Fit: Specifically molded for the unique battery bay of the T420s/T430s, ensuring a secure click-in fit without adding bulk to the chassis.
- Original Performance: Matches OEM voltage and safety standards, compatible with the ThinkPad internal charging hardware.
- High-Density Power: Uses Grade-A cells to maximize runtime within the compact 6-cell form factor.
- Safety Guaranteed: Features multiple protection layers against overcharging, short-circuiting, and high temperatures.
Frequently Asked Questions
Q: Will this fit my standard T430 or T420?
A: No. The T420s/T430s (Slim models) use a completely different, thinner battery shape compared to the standard T420/T430. Please ensure your laptop has the “s” suffix.
Q: Is this battery easy to install?
A: Yes, this is a rear-removable battery. Just slide the latch on the bottom of your laptop to swap it out in seconds.
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