ITEM NAME:Rechargeable 1-Slot Battery Charger Li-Ion USB Single Slot Smart Fast Charg Q6P6 Rechargeable 1-Slot Battery Charger Li-Ion USB Single Slot Smart Fast Charg Q6P6 Smart chip technology Overcharge protection:The charger internally uses a smart chip to automatically control the voltage to prevent the battery from overcharging and better extend the battery life. The overcurrent protection charger automatically controls the output current during charging to make battery charging more stable.The over-temperature protection charger properly designs the spacing between the outer casings to allow internal air to circulate and automatically dissipate heat during charging. The short-circuit protection is intelligently protected by the chip, and the external structure is carefully designed to make the charging safer and more worry-free.The internal chip of the charger has a battery reverse installation that does not work, and re-enables the intelligent protection function that can be normally charged. Over-discharge protection If the battery is not stored in the charging slot for a long time, the IC function is automatically turned off to ensure that the battery is not discharged.Intelligent compatible single slot slide design.Single-slot slide-type negative copper sheet is compatible with a variety of rechargeable lithium batteries Built-in charge management IC for charging 3.7V lithium battery, 4.2V after full charge It displays a red light when charging, and turns green when fully charged. It is equipped with a charging protection function and will not overcharge. Product Name: 18650 Charger Single Slot Product model: BH-042100-01U Features: Compatible with a variety of batteries Product weight: 35 grams Power supply mode: regular USB power supply Input voltage: DC 5V 1-2A Output voltage: DC 4.2V 1000mA Product size: 31*34*105mm Compatible battery model: 10440 14500 16340 16650 14650 18350 18500 18650 Colour: Black material: plastic size:10.