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High-Efficiency 2S4A Lithium Battery Charging Board with 8.4V Output & Smart Protection Features  

(Alternative version: Premium 2-Cell Li-ion Charger Module - 8.4V 4A Fast Charging with Auto

<ul><li>Supports input voltage DC 3-6V, recommended for DC 3.7V and 5V</li><li>High switching frequency up to 1MHz ensures efficient voltage compensation in quasi-CV mode</li><li>Adapts to various input power supplies with over-voltage protection</li><li>Protects against low battery voltage and short circuits</li><li>Automatic charging adjusts for internal and tracking resistance of the battery</li></ul>

Brand

Feature:
1. Switching frequencies up to 1MHz, compensate for voltage loss in quasi‑CV mode.
2. The internal resistance and tracking resistance of the battery are charged automatically.
3. Protection battery voltage is lower than the input voltage and battery short circuit.
4. Strong adaptability to the input power supply, driving capacity is limited over voltage protection battery.
5. Version 8.4V of input voltage DC 3‑6V (DC 3.7V 5V is recommended).

Specification:
Condition: 100% Brand New
Item Type: Battery Charger Module 
Material: Plastic 
2 Battery (2S)
Version 8.4V: Input voltage: DC 3‑6V (DC 3.7V 5V is recommended)
Input Current: 4A (version 4A)
Charging Voltage: 8.4V
Charging Current: 2.2A (version 4A)

Package List:
1 x Battery Charger Module 

Universal Product Code (UPC check)

High-Efficiency 2S4A Lithium Battery Charging Board with 8.4V Output & Smart Protection Features (Alternative version: Premium 2-Cell Li-ion Charger Module - 8.4V 4A Fast Charging with Auto