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Battery Brand
Battery Brand
Brand: MT Star, Quality Beyond Comparison
About 4500mAh (2 x 2250mAh dual-cell) replacement battery for the OnePlus 9 (battery model BLP829). BIS certified, original-size fit, made by MT Star.
The MT Star BLP829 is a about 4500mAh (2 x 2250mAh dual-cell) replacement battery for the OnePlus 9. It brings back the all-day battery life the phone was bought for.
| Battery model | BLP829 |
|---|---|
| Compatible devices | OnePlus 9 |
| Capacity | 2 x 2250mAh dual-cell, 7.74V (about 4500mAh) |
| Charge voltage limit | 8.9V |
| Battery type | Rechargeable lithium-ion polymer |
| Certification | BIS IS 16046 (Part 2): 2018 and IEC 62133-2: 2017 |
| Series | MT Star Premium Series |
MT Star supplies batteries for hundreds of phone models to distributors and repair shops across India. Our cells use the original form factor and connector, carry BIS certification, and come with easy returns for any manufacturing defect.
The OnePlus 9 uses the BLP829 battery. The MT Star BLP829 is a direct replacement for it.
This MT Star replacement battery has a capacity of about 4500mAh (2 x 2250mAh dual-cell).
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.
Common signs are fast draining, sudden shutdowns at 10-30%, heating while charging, or a swollen battery lifting the back panel.
Yes. For phones with glued backs we recommend fitting by a trained mobile repair technician.
