India’s Biggest Mobile
Battery Brand
Battery Brand
Brand: MT Star, Quality Beyond Comparison
4000mAh replacement battery for the Vivo NEX A and Vivo NEX S (battery model B-E7). BIS certified, original-size fit, made by MT Star.
The MT Star B-E7 is a 4000mAh replacement battery for the Vivo NEX A and Vivo NEX S. It brings back the all-day battery life the phones were bought for.
| Battery model | B-E7 |
|---|---|
| Compatible devices | Vivo NEX A, Vivo NEX S |
| Capacity | 4000mAh typical / 3880mAh rated |
| Nominal voltage | 3.85V |
| 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 |
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 MT Star B-E7 battery fits the Vivo NEX A and Vivo NEX S.
This MT Star replacement battery has a capacity of 4000mAh.
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.
