Product Overview
The L12L4A02 / L12S4E01 is a high-quality Li-ion replacement battery available in 41Wh (2900mAh) and 50Wh (3400mAh) options for Lenovo G400, G500, and Z-series laptops. Built with Grade-A cells to ensure stable power delivery and long cycle life, it restores original portability and reliability. Featuring an integrated BMS for protection against overcharge and short circuits. Ships 100% brand new with a 1-year warranty.
Technical Specifications
| Standard Model | L12L4A02 / L12S4E01 / L12M4A02 |
|---|---|
| Capacity | 41Wh (2900mAh) / 50Wh (3400mAh) |
| Voltage | 14.4V / 14.8V (Compatible) |
| Battery Type | Li-ion |
| Cells | 4 Cells, Made in Japan/Korea |
| Condition | 100% Brand New Replacement |
| Warranty | 1 Year |
Replace Part Numbers
- L12L4A02
- L12L4E01
- L12M4A02
- L12M4E01
- L12S4A02
- L12S4E01
- 4ICR17/65
Compatible Laptop Models
- Lenovo G400 / G500 / G400S / G405S
- Lenovo G410S / G500S / G505S / G510S
- Lenovo G50-30 / G50-45 / G50-70 / G50-80
- Lenovo Z40 / Z50 / Z70
- Lenovo S410P / S510P
FAQ
Q: Will this battery fit my Lenovo G50-80?
A: Yes, it is fully compatible with the G50-80, G50-70 and the entire G50 series that uses the L12S4E01 battery style.
Q: How do I choose between the 41Wh and 50Wh versions?
A: Both are physically identical and fit the same slots. The 50Wh version uses higher density cells to provide approximately 20% longer runtime than the 41Wh standard pack.