The better replacement for your original charger. The rapid charger is lightweight hand handy for traveling. Cord is retractable and will wrap up completely inside the charging unit for convenient cable management. Built in smart IC chip recognizes a fully charged battery and automatically switches to a saver mode. Offers short circuit protection, overcharging protection & diode protection. Charger will fit any standard or auxiliary car power socket. Phone can still be used while charging. Charger is the standard universal voltage DC12-24v. A handy LED charging indicator will let you know when your phone is fully charged.