2S Type-C USB 15W 8.4V 12.6V 1.5A BMS Lithium Battery Charging Boost Module With Balanced Support Fast Charge With Indicator

Origin:Mainland China Product Parameters:

1.Support QC fast charging

2.15W synchronous switching boost charging

3.Boost charging efficiency 94

4.Can be set to 2 series or 3 series lithium battery charging

5.2 series with equalization charging

6.Adjustable charging current

7. Input over-voltage, under-voltage protection

8.Adjustable charging timeout protection

9. Output over-current, over-voltage, short-circuit protection

Module is suitable for two or three strings of 3.7V lithium batteries through the short set, the default 2 strings, when two strings are used, the module can be used with the battery equalization function, this is very practical, the input can be used type-c port and the welding line, type-c port when connected to the fast-charging source, the charging voltage is automatically adjusted to improve efficiency, if the welding line is input, the input voltage should be less than the battery voltage, the module can only work in the step-up voltage If the input voltage is less than the battery voltage, the module can only work in the boosting state.

◆Input: type-c port or welding line input is optional, type-c can automatically adjust the charging voltage when it is connected to QC fast charger to improve the charging efficiency, if welding line input, the input power should be less than the battery voltage (the number of battery series connection*battery voltage).

◆Output: support 2 series and 3 series, the battery need to add a protection board, default 2 series to 3 series, need to short the short point, and then remove the side resistor. 2 series can be used to equalize the function of the middle of the two strings of batteries to the BM foot (the equalization speed is limited, use the two strings of batteries or to try to ensure that the parameters are the same).

◆ Current Settings: The green arrow in the above figure refers to the two parallel current settings current default is 100K (0.9A) and 180K (0.5A). According to their own needs to remove or replace the resistor. Calculation formula for current = 90,000 / resistance.

◆Battery charging voltage setting, the default single string is 4.2V, general batteries are also this value, no need to change. If you need to change, just set the board VSET resistor against the RVSET setting table.

◆ Charge timeout time setting, no timeout time by default, set the ROT resistor value to set. 68K-4 hours, 120K-12 hours, no post-24 hours.

◆NTC access: Normal not used, if needed, change the NTC resistor resistance to 82K, NTC welding point and next to GND access 100K thermistor (B=4100).

◆LED indicator: Normal red light is always on, blue light is on during charging, blue light is off after charging, blue light is flashing after detecting abnormality.