3.7V, 2100mAh, Li-ion Battery fits Xiaomi, 2a, Hongmi 1s, 7.77Wh

Battery Fits Models:- 2a, Hongmi 1s, M2a, M3, M3a, Mi2a, Redmi 1s, Redmi 1s Dual Sim

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Battery Part Numbers:- Bm40, Bm41

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Our battery should have the exact dimensions and fitment as the original battery; the fit and finish are checked before dispatch. The Cameron Sino range of batteries are historically the most reliable and cost-effective generic batteries we have ever supplied; they are designed with safety as a priority and will last as long as the originals. Finding the correct battery for your product can be difficult. There are so many models and part numbers it can be confusing. It's easier to reach out to us first than to return the product later. Please get in touch with us if you are unsure which battery you need. Finding the correct battery for your product can be difficult. There are so many models and part numbers it can be confusing. It's easier to reach out to us first than to return the product later. Please get in touch with us if you are unsure which battery you need. Check out the details below and ensure that your model and battery number are shown in the tables below. If for any reason, the product develops a manufacturing defect during the 12 month warranty period, we will replace the defective item free of charge. As a rough guide, lithium Ion batteries can be charged around 400 times, Nimh usually around 500 times, and Lithium-polymer around 400 times.  All the batteries we supply by Cameron Sino are designed to be as long-lasting as the original OEM battery. Our ISO 9001 certified battery uses high-quality components, and each cells rating can be seen in the table above. Actual capacity and voltage may vary slightly from the original due to cell availability. Check that your product is shown below in the products table. Special Remarks:- None at this timeConfirm that all the details listed below match your original battery before ordering. Some models have more than one battery type available, and the only way you can confirm the correct battery is to remove the original.Do not be alarmed if the Mah (Milliamp Hour) is greater or less than the original. This figure stated is an estimation of the battery's capacity to store charge and will not affect the original equipment or charging.