Features: - Microcomputer control technology intelligently recognizes rechargeable lithium batteries and intelligently selects turbulence, constant voltage or constant current charging according to the current state of the battery - Can be placed below the diameter of 26mm, height 34-70mm rechargeable batteries - Compatible with a variety of voltage cylindrical rechargeable batteries - Can charge 3.7V, 3.8V lithium-ion and lithium-polymer lithium-ion batteries and nickel-metal hydride nickel-cadmium batteries - Constant current, constant voltage charging mode - The charger uses 5V Micro USB socket input, supports 4.5-5.5V, 0.5-2A DC input - Reverse battery protection - Short circuit protection - Input voltage overvoltage protection alarm function - Each slot comes with three LED power indicator lights - Charging process can be seen directly - Charging horse display - Full brightness does not flash Applicable batteries: - 3.7V lithium batteries such as 16340, 14500, 18650, 26650, and 1.2V nickel-metal hydride batteries such as 5 and 7 - Input parameters: DC5V 1.0A-2.0A - Output parameters: 4.2V/1.48V - Charging current: 0.5-1.0(mA) - Dimensions: 124x72x32(mm) What's in the box 1 x Double Slot LED Battery Charger 1 x Charging Cable