Model -999 Rechargeable Battery Charger - For AA AAA Ni-MH Ni-CD Rechargeable Battery and 9V Ni-MH Li-ion Rechargeable Battery Convenient for using Freely charge 1/2/3/410 pieces AA/AAA NI-MH/NI-CD batteries and 1 or 2 pieces 9V batteries Safety protected * Controlled by MCU, and using -V pulse charging, automatically when charged full (except for 9V battery) * Short circuit protection and reverse polarity protection * Overheat-detection to prevent over-charging Compatible AA/AAA NI-MH/NI-CD rechargeable battery, 9V Ni-MH Ni-CD Li-ion rechargeable battery. ( Not For: alkaline battery) Input and output Input: AC 100-120V AC 50/60Hz. Worldwide voltage Output: 2.5-3.5V DC 3.3A How to use the -999 For AA/AAA Batteries: Can charge the batteries individual, 10 bays/slots. Easy charge 1/2/3...9/10 AA AAA batteries LCD shows charging process. Charging - LCD will light up; Charged full - LCD will automatically turn off. For 9V Batteries: Can charge 1 or 2 pcs 9V Ni-MH Ni-CD Li-ion battery LED light shows charging process. Charging - LED light will flash after 1 second; Charged Full - The LED light will automatically turn off. Package 1 x -999 Battery Charger 1 x User manual 1 x AC Adapter