This 3.87V 4200mAh Li-Polymer battery is a compatible replacement for Xiaomi BP4B. Compare the number printed on your current battery, its voltage, chemistry, dimensions and connector before ordering.
Included: One replacement battery pack.
Current Estimated Delivery Date: 1-2 Weeks
Battery specifications
| Voltage | 3.87V |
| Capacity | 4200mAh |
| Chemistry | Li-Polymer |
| Energy | 16.25Wh |
| Dimensions | 88.00 x 62.00 x 4.30mm |
| Battery weight | 58g /2.05 oz |
Replacing your Xiaomi BP4B battery
Compare the connector shape, wire arrangement and polarity with your original battery. Check all listed specifications; a similar model name or matching voltage alone does not confirm a fit.
Compatible equipment models
Xiaomi 2203129G, 2203129I, Mi 12 Lite 5G
Replacement battery numbers
Xiaomi BP4B