4S 2A Lithium Battery Fast Charger Module

This product is a module with wide application and multi-innovative application design. It has been maturely applied in the application of high-power charging treasure, and has the charging mode of buck-boost.

Support multiple strings of lithium battery charging, no matter the input voltage is higher than, lower than or equal to the battery voltage, the battery can be charged.

Built-in fast charging input protocol, battery charging is divided into three stages: pre-charging, constant current, constant voltage process.

Support fast charging, can use 9V/12V., 4.5V-15V wide voltage input, and support 1-5 string battery charging.

The charging voltage can be set by resistors to support multiple strings of lithium batteries

Parameter Description:

1: Small size, high power, 3A high current, the maximum power is 18W (not exceeding this power).

2: 4.5-15V power supply, which can be used for buck-boost charging of 2-4 of lithium-ion/lithium polymer.

3: Adaptive charging current regulation, suitable for charging with all USB ports.

4: Built-in input fast charging protocol, 9V or 12V input protocol can be configured.

5: Intelligent pre-charging, constant current, constant voltage, with short circuit protection.

6: Automatically work in boost or buck mode charging according to the input voltage and battery voltage changes.

7: 3-color LED charging status indicator indicates charging, full, fast charging.

8: Working environment temperature range: -20℃～85℃.

Instructions:

The module input can be one of micro USB interface, type-c interface, or direct welding wire, the voltage is 4.5-15V, and the battery can be 1-5 strings of lithium batteries or lithium iron phosphate according to the settings of resistors R1 and R2 The battery, the battery should have a protection board, and the one that can automatically balance the voltage is even better. If fast charging is used for the input, 9V input can be set for two strings, and 12V input can be set for more than 3 strings. Of course, it is also possible not to set it.

Introduction to other charging voltage settings

Since the module supports a wide range of charging, the module only provides several common charging configurations. If other charging configurations are required, you can change the R1 and R2 resistors to configure them yourself.

LED Indicator

Important:

• Do not connect the battery in reverse.
• Battery should have a protection circuit.
• Use thicker wires
• Device may get hot during the charge

Device can be configured to charge 2S,3S or 4S batteries by modifying the resistors as below. Default resistors are set for 4S configuration