Lenovo A5 (BL291) Li-Po Replacement Battery
The BL291 is an original high-quality Li-ion Polymer replacement battery designed for select smartphones from Lenovo, specifically the Lenovo A5 series. With a typical capacity of 4000mAh, it delivers reliable and efficient power performance for smooth daily usage, extended standby time, and consistent device operation. Built with advanced lithium-polymer technology, it operates at a nominal voltage of 3.85V and supports safe charging up to 4.4V, ensuring stable energy output and long-lasting durability. This battery is an ideal replacement solution for restoring original device performance.
Specifications
- Model: BL291
- Battery Type: Lithium-ion Polymer (Li-Po)
- Typical Capacity: 4000mAh / 15.4Wh
- Rated Capacity: 3900mAh / 15.0Wh
- Nominal Voltage: 3.85V
- Limited Charge Voltage: 4.4V
- Compatibility: Lenovo A5 (L18011, L18021, L18081)