India’s Biggest Mobile
Battery Brand
Battery Brand
Brand: MT Star, Quality Beyond Comparison
MT Star BM4U battery for the Redmi K30 Ultra. 4500mAh, Li-ion polymer, certified to IS 16046 for safe everyday use.
The Redmi K30 Ultra pushes its battery hard with a 120Hz display and a flagship-class chipset. The MT Star BM4U is a 4500mAh replacement built for that load, bringing back the screen-on time an older cell has lost.
| Battery model | BM4U |
|---|---|
| Compatible phones | Redmi K30 Ultra |
| Capacity | 4500mAh typical / 4400mAh rated |
| Nominal voltage | 3.87V |
| Charge voltage limit | 4.45V |
| Battery type | Rechargeable lithium-ion polymer |
| Certification | BIS IS 16046 (Part 2): 2018 and IEC 62133-2: 2017 (R-41280119) |
| Series | MT Star Premium Series |
Safety comes first with MT Star. Our batteries are certified to IS 16046 and IEC 62133-2, built to the original dimensions, and backed by our support team and easy returns for manufacturing defects.
The Redmi K30 Ultra uses the BM4U battery. The MT Star BM4U is a direct replacement for it.
This replacement BM4U battery has a capacity of 4500mAh, matching the Redmi K30 Ultra’s original battery.
Yes. It’s certified under BIS IS 16046 (Part 2): 2018 and IEC 62133-2: 2017 (R-41280119) and is made to the original size and connector.
Yes. We recommend having it fitted by a trained mobile repair technician, because modern phones have glued backs and delicate connectors.
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.
Yes. MT Star supplies distributors and repair shops across India. Contact us to become a distributor.
