XTAR VC2 2 Bay Digital Battery Charger 18650 20700 21700 Product Highlights: 2 Bay Digital Charger Single Charging Speed - .5A x 2 LCD High Tech Display Compatible with 18650, 20700, 21700, 26650 and more Reverse polarity protection protects if cell is entered in the wrong way Packaging Contents: Xtar VC2 digital battery charger Xtar USB cable Xtar carrying bag Warranty Card User Manual Scratch and Check validation serial number Additional Features: LCD display shows current, voltage, and capacity of charge 2 independent channels Capability to charge different types of batteries at the same time Compatible with all sizes of cylindrical lithium-ion batteries ranging from 10440 to 26650 0V activation can bring dead batteries back to life Automatically detects battery power status and selects the appropriate voltage and charge mode Automatically stops when charging is complete and prevents batteries from being over-charged Features reverse polarity protection if you accidentally insert a battery the wrong way Specifications: Input – DC 5V 1A Output Current – .5A x 2 channels Cutoff Voltage for Li-ion Battery – 4.2V ±.05V Compatible with: 3.6V/3.7V Lithium ion Batteries Most Cylindrical Lithium-ion Batteries Ranging In Size From 10440 To 26650