Retractable Rapid Car Charger with IC Chip for Sprint, Alltel HTC Touch Pro Smartphone Brand new non-OEM. Retractable vehicle lighter adaptor. (12~24v DC) Push a button to retract all cord. Extend the cord with your desired length. Plug never heats or overcharges the battery. Short circuit protection. LED charging indication. Can Charge Ni-Mh, Ni-cd and Li-Ion Battery. Intelligent IC chip inside recognizes a full battery and automatically switch to a saver.