This battery has all the criteria required to maintain a quality that mimics original. For all safety, the batteries are tested, certified and have the international standards required. PCM circuit board has a double protection against overcharging, discharge and short circuit. We at G-SP always offer a battery that meets the safety requirements to achieve a qualified and high-quality replacement battery. Technical specifications Battery type: Li-ionBattery cell Rating: A++Capacity: 3687 mAhVolt: 3.82VMax Volt: 4.35VPCM Card: MCTLaddcycles: 550+Recharge time: 4 hours (Depending on charger)Standby time: 4-7 daysCertificate: CE, RoHS, UL, IEC62133, PSE, TIS, MSDS and UN38.3Security: Dual IC ProtectionMaterial: Lithium-ionCompatible with: Apple iPhone 12 Pro Max Supplementary protection Overcharge protectionDischarge protectionShort circuit protection OBS G-SP is not responsible for damage caused during the use or installation process.