Safeguard ProtectionUSB c Android chargers comes with premium built-in safeguards and intelligent IC identification technology to prevent against short circuit, over-current, over-voltage, over-heating and over-charging. It can intelligently recognize the battery type and status, will automatically stop charging when fully charged for a safety charging and long lifespan. Quick Charge 3.0 Rapid ChargingAdaptive type c fast charger, enables your battery from zero to 50% in just 30 minutes, 75% faster than standard chargers.