2S 3S 4S Type-C USB Charger Module 4.5V-15V 4.5-21V Step-Up Buck QC Fast Charging CC/CV for Power Bank Mod Solar Charger 18W 25W

FQA:

1. What fast charging protocols does the product support?

Answer: Currently, it supports the most common QC protocol, which is supported by most fast charging power sources on the market.

2. Does the module generate a lot of heat?

Answer: The heat generation varies depending on the charging power. When the charging power is relatively large, the heat generation will be relatively large, which is a normal phenomenon.

Features:

1. This product is a module with a wide range of applications and innovative application designs. It has been maturely applied to high-power power bank applications and has buck-boost mode charging.

2. Supports charging of multiple strings of lithium batteries. The battery can be charged regardless of whether the input voltage is higher, lower 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 supports charging of 1-4 strings of batteries.

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

Specifications:

Style 1: Blue board

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

2: 4.5-15V power supply, can be used for 1-4 series lithium ion/lithium polymer buck-boost charging.

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

4: Built-in input fast charging protocol, configurable 9V or 12V input protocol.

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

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

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

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

9: Scope of use: Multi-string lithium battery charging high-power power bank modified solar charging

10: Multiple specifications:

2 strings fully charged 8.4V

3 strings fully charged 12.6V

4 strings fully charged 16.8V

How to use:

The module input supports type-c interface, or one of the direct welding wires, the voltage is 4.5-15V, the battery can be 1-4 strings of lithium batteries or lithium iron phosphate batteries according to the settings of resistors R1 and R2, the battery must have a protection board, and it is better to be able to automatically balance the voltage. If the input uses fast charging, two strings can be set to 9V input, and more than 3 strings can be set to 12V input. Of course, it is also possible not to set it.

Introduction to other charging voltage settings

Because 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. The charging cut-off voltage can be calculated using the following formula.

Style 2: Black board

1. Multi-string (unlimited parallel number) 3.7V (single cell fully charged 4.2) lithium battery charging board

2. 4.5-21V wide voltage input

3. Support PD, QC fast charging

4. Adjust power according to input voltage, 12V can be 18W, 20V can be 25W. Current is calculated according to voltage

5. With charging full fast charging indication, etc.

6. Built-in over-temperature protection short circuit protection

7. Trickle/constant current/constant voltage three-stage charging.

8. The module is oriented to wide voltage input, multi-string battery output, normal use with protection board, with indicator light, normal full full indicator light, if the protection board protection causes premature charging stop, it may cause the full full indicator light to flash, which is normal.

9. Recommended voltage: 4.8-20V

B-: battery negative pole (protection board P-).

B+: battery positive pole (protection board P+).

9/12/20 short circuit point: set the deception voltage, no short circuit is 5V.

Notes:

* Do not connect the battery in reverse, or the board will burn out.

* Connect the charger before connecting the battery, and test whether the module charging light is normal.

* The wire cannot be too thin, otherwise the charging current cannot keep up, and the wire must be welded.

* The battery must have a protection board.

* When the module has high power, it will generate more heat, so pay attention to fanning the heat, and do not use materials that are not easy to heat to seal the module.

Package Included:

1X module