Load faster – use longer – feel safer! High quality Extra Digital lithium ion batteries with shorter charging time and longer battery life. Battery replaces the original: Xiaomi Redmi Note 4 Technical specification:Capacity: 4100 mAhType: Li-polymerVoltage: 3.7 VNote: The list of compatible batteries and phones may be incomplete.Warranty: 12 months.Manufacturer: Extra Digital, EU