XTAR SC2 FAST 1-2 Cell Intelligent LiIon battery fast charger with two independent channels and LED display. Charge 18650, 18700, 20700*, 22650, 25500, 26650 size 3.6V/3.7V LiIon batteries.*Can charge protected 20700/21700 batteriesFeatures: Input via included Micro USB cable.Independent channels with Intelligent Adapting Identification.Quick Charge Compatible - Charges at 3A when using a QC3.0 adaptorInternal Resistance testing function to automatically adjust charge currentThree-phase charging (TC-CC-CV) for LiIon.2 charge current options: 3.0A for 1 cell (when using QC Compatibel adaptor)2.0A for 2 cells0V low battery activation.Overheat protection as well as effective heat dissipation design and fire resistant case.Reverse polarity protection and short circuit protection.Over-Voltage and Over-Current Protection1 year warranty.