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4000mAh EB-BG991ABY Replacement Battery For Samsung Galaxy S21 5G SM-G991B/DS G991U Capacity Phone Battery + Tools
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⚠️ IMPORTANT NOTICE: Batteries are special goods. We use secure special logistics. Tracking updates may take 5-10 days, delivery usually takes 15-30 days.
Product Description – Replacement Battery for Samsung Galaxy S21 5G
Revive your Samsung Galaxy S21 5G with this premium replacement battery. Designed for precise compatibility and stable performance, it is the ideal solution for batteries that drain fast, fail to charge, overheat, or lose standby time.
Built with high-quality lithium polymer cells and smart IC protection, this battery delivers reliable power output, longer usage time, and safe daily charging performance.
Main Features
- Compatible with Samsung Galaxy S21 5G
- Compatible Models: SM-G991B / DS / G991U
- Battery Model: EB-BG991ABY
- Typical Capacity: 4000mAh
- Stable Output & Fast Response
- Long Lifespan Battery Cell
- Smart IC Safety Protection
- Accurate Size & Perfect Fit
- Tested Before Shipment
Safety Protection
- Over-charge Protection
- Over-discharge Protection
- Overheat Protection
- Short Circuit Protection
Warm Tips
Please verify your phone model and battery code before purchase. Professional installation is recommended.
Key specifications
- Product typerechargeable Li-Po polymer battery
- Model / part numberBG991ABY
- Capacity4000mAh
- Ordering checkconfirm dimensions, connector polarity and device compatibility before purchase.
Compatibility and ordering check
Match the model number, voltage, capacity, dimensions and connector before ordering. If replacing an existing pack, compare the label and plug orientation with your battery.
FAQ
- How do I confirm this product fits my device?
- Check model number, voltage, capacity, size and connector against your part before purchase.
- Can this battery be used with any charger?
- Use only a charger that matches the battery chemistry, voltage and connector requirements.
Safety note
Do not short-circuit, puncture, crush or expose batteries to fire or water. Stop using the battery if it swells, leaks, overheats or shows visible damage.