Maximal Power Ultra Fast 8-Bay AA/AAA Ni-Mh/Ni-Cd Battery Charger is designed for charging 1 and/or up to 8 batteries at a time and with an A/C adapter plug that can work with any North American (US) Socket. Each battery bay has its own individual charging channel and LED charging light! It has Smart LED indicator showing charging status. It charges both Ni-Mh/Ni-Cd. There are FIVE Levels of Protection, Short Circuit Cut-Off, Delta-V Cut-Off, Timer Control Protection (6h), Reverse Polarity Protection, Defective/Non-Rechargeable Battery Detection. CHARGER SPECS - 1. Input Voltage: 100-240V / 50-60Hz; 2. Output Voltage: 1.4V-500mA8. CHARGING TIME - Ni-Mh AA 2700mAh: 6.0h; Ni-Mh AA 2000mAh: 4.8h; Ni-Mh AAA 800mAh: 1.9h; Ni-Cd AA 1000mAh: 2.4h; Ni-Cd AAA 300mAh: 0.7h. NOTE - Accessory only, batteries NOT included. For a success and safe charge to your batteries, please make sure to line up the correct polarity (positive / negative) before inserting the battery onto the charger.