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Battery Brand
Brand: MT Star, Quality Beyond Comparison
3120mAh replacement battery for the Xiaomi Mi 4i (battery model BM33). BIS certified, original-size fit, made by MT Star.
When the Xiaomi Mi 4i starts draining fast or switching off early, the battery is usually the cause. The MT Star BM33 restores 3120mAh of capacity with the original size and connector.
| Battery model | BM33 |
|---|---|
| Compatible devices | Xiaomi Mi 4i |
| Capacity | 3120mAh typical / 3030mAh rated |
| Nominal voltage | 3.84V |
| Charge voltage limit | 4.4V |
| Battery type | Rechargeable lithium-ion polymer |
| Certification | BIS IS 16046 (Part 2): 2018 and IEC 62133-2: 2017 |
| Series | MT Star Premium Series |
Every MT Star Premium Series battery is made to the original size and connector, so it fits like the original. Each cell is BIS certified and tested for safe, stable output, and manufacturing defects are covered by easy returns.
The Xiaomi Mi 4i uses the BM33 battery. The MT Star BM33 is a direct replacement for it.
This MT Star replacement battery has a capacity of 3120mAh.
Yes. It's certified under BIS IS 16046 (Part 2): 2018 and IEC 62133-2: 2017 and is made to the original size and connector.
Yes. For phones with glued backs we recommend fitting by a trained mobile repair technician.
Use a good-quality charger suited to your phone. After fitting, charge it fully and use it normally for the first few cycles so the battery indicator calibrates.
