Maximal Power RCR123A+FC RCR123A Rechargeable Li-ion Battery and Charger with Car Adapter Combo for RCR123A,RCR123,CR123,16340,17345,17335 Amazon.com is the only authorized dealer selling MaximalPower brand products. Please make sure your item is ONLY sold and shipped by Amazon.com! All other marketplace vendors are selling counterfeit products that do not perform the same, and/or are not covered by our MaximalPower Warranty Works with any device powered by RCR123A, RCR123, CR123A, CR123, CR16340, 16340, CR17335, CR17335SE, 17335, CR17345, 17345 battery Battery Chemistry: Li-ion, Battery Output Volts: 3.0V, Battery Capacity: 600mAh Charger has a built-in microprocessor that automatically switches off when batteries are fully charged Charger Input Voltage : 12V = 400mA, AC 100-240V 50-60 Hz 0.25A Charger Output Voltage : 4.5V = 20mA x 2, AC 12.0V = 500mA Chargers comes with a car AC/DC adapter to charge battery in the car while traveling on the road for convenience