Rapid Car Charger with IC Chip for AT&T Samsung SGH-A777 Brand new non-OEM. 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.