Hyperion LG G2x Battery 4G 2x1800 mAh Battery + Wall Travel Dock USB Charger (Also Compatible with LG P999, P990, and Optimus 2x) 2x 1800mAh Battery + 1 Wall Charger for the LG G2x 4G P999 and Optimus 2x P990 (AT&T, T-Mobile, GSM). The battery has an integrated microchip to prevent overcharging and lengthens battery life. The Smart LED shows charging status. Quick charge with automatic constant current control prevents battery from overcharging, short circuit, and electronic shock. Easily swap your battery when your charge is low.