Samsung Galaxy S21 5G G991B Battery 3880mAh


  • This is a brand new premium quality replacement battery for your phone.
  • It’s designed to replace damaged or non-working batteries.
  • Compared to other batteries, this lithium-ion battery charges faster, lasts longer, and has a higher power density for more battery life in a lighter package.
  • This battery is rechargeable and environmentally friendly.
  • Every part of the battery is tested before shipping.
  • Professional installation is highly recommended.


  • Durable Life – full capacity, long-lasting, 0 cycle.
  • Each battery is made from high-quality lithium polymer battery cells, connectors, and PCBAs.
  • Quality testing is performed by the staff to guarantee high capacity and efficient PCBs that match original standards.
  • The manufacturer has ROHS and CE certifications and exhibits the highest levels of quality control. Each battery is tested with sophisticated tools to ensure it meets the highest standards and performs on par with OEM batteries.
  • The battery comes with security protections, including overcharging, overheating, overload, short circuit, highly effective temperature control, and battery cell PTC protection.

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