2S 3S 4S 1A 2A USB-C LI-ION CHARGER MODULE 18650 BATTERY CHARGING BOARD BUCK CN3304

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Power up your multi-cell lithium battery projects with this versatile buck charging module based on the CN3304 controller. It accepts input via a convenient USB-C port (5V) or wider voltage range through the VIN solder pads, making it quite flexible. This board handles the complexities of charging 2, 3, or 4 series Li-ion or LiPo cells (depending on the version) with selectable 1A or 2A current options available. It automatically manages pre-charge, constant current, and constant voltage phases for safe and efficient charging. Built-in LED indicators show charging status (CR) and charge completion (OK). Great for DIY power banks, portable electronics, or robotics applications needing reliable multi-cell battery charging. Just hook up your power source and battery pack to the clearly marked pads or terminals.
 
 
⭐ Specification
Chipset: CN3304
Input Voltage: 5V (via USB-C), 5V-24V (via VIN pads)
Input Connection: USB-C Port, VIN/GND Solder Pads
Output Connection: BAT+/BAT- Screw Terminals
Indicators: Charging (CR LED), Charge Full/OK (OK LED)
Charging Method: Automatic Precharge, Constant Current (CC), Constant Voltage (CV)
Protection: Input Undervoltage, Battery Overvoltage
Dimensions (L x W): Approx. 38 x 18 mm

— Variation Specifics —

4S 2A Version:
– Battery Configuration: 4-Cell Series (4S)
– Full Charge Voltage: 16.8V
– Max Charge Current: 2A

3S 2A Version:
– Battery Configuration: 3-Cell Series (3S)
– Full Charge Voltage: 12.6V
– Max Charge Current: 2A

2S 2A Version:
– Battery Configuration: 2-Cell Series (2S)
– Full Charge Voltage: 8.4V
– Max Charge Current: 2A

3S 1A Version:
– Battery Configuration: 3-Cell Series (3S)
– Full Charge Voltage: 12.6V
– Max Charge Current: 1A

2S 1A Version:
– Battery Configuration: 2-Cell Series (2S)
– Full Charge Voltage: 8.4V
– Max Charge Current: 1A

4S 1A Version:
– Battery Configuration: 4-Cell Series (4S)
– Full Charge Voltage: 16.8V
– Max Charge Current: 1A
 
 
⚒️ Interesting Project
Build a robust portable power bank.
Create a charging system for robots.
Design custom battery packs for projects.
 
 
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