Features • Intelligent circuitry detects the battery type and status before entering automatic charge mode (CC, CV, dV/dt) • Automatically detects battery power status and selects the appropriate voltage and charge mode (with the exception of LiFePO4 batteries which require manual selection) • Compatible with LiFePO4 batteries • Compatible with small capacity batteries • Automatically stops charging when complete • Features over-charge prevention to protect batteries • Features temperature monitoring to prevent overheating • Made from durable ABS (fire retardant / flame resistant) • Features reverse polarity protection • Designed for optimal heat dissipation • Certified by RoHS, CE, FCC and CEC • Insured worldwide by Ping An Insurance (Group) Company of China, Ltd. Specifications Input: AC 100-240V 50/60Hz 0.25A(MAX), DC 12V 1A Output voltage: 4.2V plusmn;1% / 3.7V plusmn;1% / 1.48V plusmn;1% Output current: 500mA x 2 Compatible with: Li-ion / IMR / LiFePO4: 26650, 22650, 18650, 17670, 18490, 17500, 18350, 16340 (RCR123), 14500, 10440 Ni-MH / Ni-Cd: AA, AAA, AAAA, C Dimensions: 143mmtimes; 74mmtimes;36mm Weight: 168g (without batteries and power cord) 2X Nitecore NL189 3400mAh rechargeable batteries, 12V power cable,2X EdisonBright AA to D battery converter spacers included. These allow use of rechargeable AA batteries in D battery equipment.