Galaxy S21 Replacement Battery (EB-BG991ABY) — Standard Replacement
3.85 V
4000mAh
15.4 Wh
400 cycles
6 mo warranty
₹1,260 MRP — best price on enquiry
In stock · Lead time 2 days
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Technical specification
| Brand | The Battery Expert |
| SKU | TBE-MOB-SAM-EB-BG991ABY-STD |
| Chemistry | Lithium Polymer (Li-Po) |
| Nominal voltage | 3.85 V |
| Capacity | 4000 mAh |
| Energy | 15.4 Wh |
| Part Number | EB-BG991ABY |
| Grade | Standard Replacement |
| Cell Type | Prismatic Li-Po |
| Protection | Integrated PCM / BMS with NTC thermistor |
| Charge Voltage | 4.40 V |
| Certification | IEC 62133-2, BIS |
| Includes | Adhesive strip, install guide |
| Note | Tier-1 aftermarket cell, IEC 62133 tested, includes adhesive strip. |
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Why buy from The Battery Expert
Every type of battery under one roof — so you are not visiting a mobile shop, a car battery dealer and an electrical store for three different batteries. We are sourcing specialists with direct tie-ups to the world's leading brands and the largest distribution houses, run in India by second-generation battery manufacturers with over 40 years of technical and manufacturing experience. Genuine stock, real warranty, and technical advice from people who have actually built batteries.