Item Descriptions:-How to switch the rechargeable battery type: Press and hold the setting button for 3 to 5 seconds. The marquee is in high voltage (4.35V) charging mode from left to right. Press and hold the marquee for 3-5 seconds from right to left in normal power (4.2V) charging mode.-Convenient and efficient: Can charge four 1S potassium batteries or four 1S high-voltage carp batteries at the same time.-Indicate charging status: 4 LED lights independently indicate the charging status of the four channels. The charging process is intermittent, and the charging is completed.-Note: The charger can only charge batteries with PH2.0 interface. When using an adapter cable, batteries with three different interfaces cannot be charged at the same time.Package:1x 4CH Micro USB Battery ChargerItem Specifications:Item weight:15 GramsOutput voltage:4.35 VoltsInput voltage:5 VoltsCurrent Rating:2 Amps