Specifications: Brand: Tenergy Input: AC100-240V 50/60HZ, 0.2A Output AA: DC 1.2V 1000mA x2 / 500mA x 4 Output AAA: DC 1.2V 500mA x2 / 250mA x 4 Included Qty: 1 Features Four independent charging channels for individual battery charging and detection. Charges up to 4 AA or 4 AAA. Charges NiMH Rechargeable Batteries Smart charging system ensures that batteries are never overcharged Micro-processor control (-Delta V detection) which automatically controls the charging process. Reverse polarity protection 4 LED for each slot indicating charging status. Constant charging current mode; trickle current when fully charged. LED light is on red (Steady) while charging LED light Turns green when charging complete Blinking Light indicates charging error. Convenient flip-out plug Ultra light and compact Charge Times: AA 1500 - 2900 mAh -> 1.5 Hours - 3 hours (1-2 Batteries) AA 1500 - 2900 mAh -> 3 - 6 hours (3-4 Batteries) AAA 700 - 1200 mAh -> 1.5 hours - 3 hours (1 - 2 Batteries) AAA 700 - 1200 mAh -> 3 Hours - 5 hours (3 - 4 Batteries) Battery Specifications: Size: AA Rechargeable Capacity: 2900 mAh Chemistry: Nickel Metal Hydride (NiMH) Voltage: 1.2V Brand: Accupower Included Qty: 4 Features: No memory effect Reliable service life Long-Lasting Performance Recharges up to 1000 Cycles Saves you hundreds of dollars compared to Alkaline batteries Can be replaced in any product that uses AA Batteries