Description
The 4.2V / 8.4V Li-ion Battery Charging Board is a compact, high-efficiency charging module designed for charging one or two lithium-ion batteries (3.7V cells) with precision and safety. Perfect for DIY electronics, battery packs, or embedded systems, this board delivers up to 2A of charging current and supports both single-cell (4.2V) and dual-cell (8.4V) configurations.
Key Features:
Dual Voltage Support: Compatible with both 4.2V (single cell) and 8.4V (2-cell series) lithium-ion battery configurations. High Charging Current (2A): Provides fast and efficient charging for medium-to-large battery packs.
Automatic Battery Detection: Intelligent charging control adjusts output based on connected battery configuration. LED Charging Indicators: Built-in LED indicators show real-time charging status (charging/fully charged).
Voltage adjustment: The voltage adjustment must be operated in the power state. When the switch is installed, the input must be disconnected and then switched. Advanced Safety Protection: Includes overcharge, overcurrent, short-circuit, and reverse polarity protection.
SINGLE DOUBE LI-ION BATTERY 2A BOARD
Compact PCB Design: Ideal for integration into custom DIY power banks, robotics, and electronics projects.
Wide operating voltage 5V-18V, dual battery trickle charge into pre-charge, constant current, constant voltage three phase; red and green LED charge status indicator.
Specifications:
Input Voltage:Â 5VÂ Output Voltage:Â 4.2V
Charging Current:Â Up to 2AÂ Battery Type:Â 3.7V Li-ion / Li-polymer (1S or 2S)
Protection Features:Â Overcharge, Short Circuit, Overcurrent, Reverse Polarity
Charging Indicator Red: Charging / Green: Fully Charged
Weight: ~5g PCB Size: Approx. 50mm × 20mm × 5mm
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