A high-performance battery of 6000mAh that extends the usage time of your Samsung M21, M30s, or M31. Replace your old battery, and your smartphone will function like it did on the first day. The 6000mAh battery is manufactured to the highest quality standards. Features and product specifications: Samsung Galaxy M21, M30s, M31 EB-BM207ABY replacement battery. 6000mAh battery capacity, safe charging thanks to overload and overheating protection. Guarantees the same performance as the original battery. High-quality and durable.