The power will automatically renew after 2 hours of power failure.
Chip upgrade,smarter:Protect the battery from overcharging.
Speed upgrade 3A current,charging faster:22AWG thickened pure copper core,high conversion during charging,non-destructive,passing 3A current easily.
Surge protection,safer:With surge protection,can cut off the instantaneous high voltage and large current instant,prevent the surge damage of the charging devices.