HTC Cingular Tytn / 8525 / Jasjam / Hermes PDA Smartphone Accessory Bundle Kit- USB Hot Sync Cradle Twin Desktop with Spare Battery Charger Slot + Standard Lithium-ion Battery Includes:Twin Desktop Cradle Battery Charger, Standard Lithium-Ion Battery. Desktop Charger: Charges both your phone battery and an extra battery. Contains protection circuits to prevent overcharging. LCD screen shows charging status for both slot Brand New non-OEM Battery, Battery type: Lithium Ion. No memory loss effect. Integrated microchip prevents overcharging & lengthens battery life