Rapid Car Charger with IC chip for AT&T Pantech Impact P7000, Reveal C790, Matrix Pro C820 GSM Cell Phone Brand new Charger Vehicle Lighter Adaptor. (12~24v DC) Intelligent IC chip inside recognizes a full battery and automatically switch to a saver. Plug never heats or overcharges the battery. Short circuit protection. LED charging indication. Can Charge Ni-Mh, Ni-cd and Li-Ion Battery.