Features:
1.This product is a widely used and innovative module designed for multiple applications. It has been widely used in high-power power bank applications and has a voltage up and down mode for charging.
2.Supports multiple series of lithium batteries for charging, allowing the battery to be charged regardless of whether the input voltage is above, below, or equal to the battery voltage.
3.Built in fast charging input protocol, battery charging is divided into three stages: pre charging, constant current, and constant voltage process.
4.Supports fast charging and can deceive 9V/12V, 4.5V-15V wide voltage input, and supports 1-5 series battery charging.
5.The charging voltage can be set through a resistor to support multiple series of lithium batteries

Parameter:
1: Small size, high power, 3A high current, maximum power of 18W (not exceeding this power).
2: 4.5-15V power supply, can be used for voltage up and down charging of 1-5 series of lithium ions/lithium polymers.
3: Adaptive charging current regulation, suitable for all USB interface charging.
4: Built in input fast charging protocol, can be configured with 9V or 12V input protocol.

6: Automatically operates in boost or buck mode for charging based on changes in input voltage and battery voltage.
7: The 3-color LED charging status indicator indicates charging, fully charged, and fast charging.
8: Working environment temperature range: -20 ℃~85 ℃.
9: Scope of use: Multi series lithium battery charging, high-power charging bank modification, solar charging
10: Multiple specifications:
2 strings fully charged with 8.4V
3 strings filled with 12.6V
4 strings filled with 16.8V

Usage method:
The module input can be one type-c interface, or direct bonding wire. The voltage is 4.5-15V. According to the resistance R1 and R2 settings, the battery can be 1-5 series lithium batteries or lithium iron phosphate battery. The battery should be equipped with a protection board, which can automatically equalize the voltage. If the input uses fast charging, two strings can be set to 9V input, and more than three strings can be set to 12V input. Of course, it is also possible to not set it.
Introduction to other charging voltage settings
Since the module supports a wide range of charging, it only provides several common charging configurations. If other charging configurations are needed, R1 and R2 resistors can be modified to configure. The charging cutoff voltage can be calculated by the following formula.

Matters needing attention:
*Do not reverse connect the battery, connect the reverse burning board.
*Before connecting the battery, connect the charging head and test whether the charging light of the module displays normally.
*The wire cannot be too thin, the charging current cannot keep up, and the wire must be welded.
*The battery must come with a protective plate.
*When the module power is high, it will generate more heat. Pay attention to fan heating and do not use materials that are not easily accessible to heat to seal the module.

Package include:
1X module