C-type lithium battery charger board BMS 3S 4A for 18650 batteries.

• 3 Cell Version (3S) 12.6V
• Input Voltage: DC 3-6V (Recommended DC 3.7V 5V)
• Input Current: 4A (4A Version)
• Charging Voltage: 12.6V
• Charging Current: 1.48A (4A Version)

Specifications:

• Switching frequency up to 1MHz
• Quasi-CV operation to compensate for voltage drop due to internal battery resistance and electronic circuit resistance
• Automatic protection against excessively low battery voltage
• Good adaptability to limited current sources
• Protection against battery overvoltages
• LED indicators: ''CR'' shows the charging status
• ''OK'' LED means full charge or stable operating voltage
• Operating ambient temperature: -40℃ to ＋85℃
• Size: 39mm x 18mm x 6.3mm
• Weight: 5g

Applications:

• PDA
• MP3 Players
• MP4 Players
• Digital Cameras
• Bluetooth applications
• Gaming devices
• Notebook li-on battery 18650
• Mobile phones
• Solar charging
• Audio equipment
• Portable devices
• POS
• Electronic fans
• TYPE-C charging equipment

The input current is determined by the value of the two RCS. The charging voltage is determined by the chip and cannot be modified by resistance.