Youmile 2 pcs 2S 2A Lithium Battery Charging Board Type-C USB 18650 Li-ion Lithium Battery Charger Module Boost Converter 8.4V Charging Protection Board with Type-C to USB cable red and black cable

This series includes three types: 2S, 3S, and 4S, each of which is divided into 1A, 2A, and 4A.Customers choose what they need according to different needs.The module has high safety performance, is easy to understand and operate,and has battery overvoltage protection. Specifications: 2-Cell(2S) 8.4V Version: Input voltage : DC 3-6V(Recommend DC 3.7V 5V) Input current : 1A(1A Version);2A(2A Version);4A(4A Version) Charging voltage : 8.4V Charging current : 0.55A(1A Version);1.1A(2A Version);2.2A(4A Version) 3-Cell(3S) 12.6V Version: Input voltage : DC 3-6V(Recommend DC 3.7V 5V) Input current : 1A(1A Version);2A(2A Version);4A(4A Version) Charging voltage : 12.6V Charging current : 0.37A(1A Version);0.74A(2A Version);1.48A(4A Version) 4-Cell(4S) 16.8V Version: Input voltage : DC 3-6V(Recommend DC 3.7V 5V) Input current : 1A(1A Version);2A(2A Version);4A(4A Version) Charging voltage : 16.8V Charging current : 0.28A(1A Version);0.56A(2A Version);1.12A(4A Version) Feature: 1.Switching Frequency up to 1MHz. 2.Quasi-CV mode to Compensate for the Voltage Loss on Battery Internal Resistance and Trace Resistance. 3.Automatic Recharge. 4.Protection for Battery Voltage Being Low than Input and Short Battery. 5.Good adaptability to Input Supply with Limited Driving Capability. 6.Battery Overvoltage Protection. 7.Led indicator : ''CR'' LED is charge status indicator;''OK'' LED is fully charged OR Constant voltage mode. 8.Operating Ambient Temperature－40℃ to ＋85℃. 9.Size 39mm x 18mm x 6.3mm. 10.Applications:PDA, MP3 Players, MP4 Players,Digital Cameras,li-on li-po Lithium Battery 18650,Mobile phone,POS , Electric Fan,Type-C charging equipment,etc. Package Includes: 2 x 2S 2A Lithium Battery Charging Board 1 x Type-C to USB cable 1 x Red and black cable