3S 4S 5A BMS Active Balancer Board Li-ion Lifepo4 LTO Battery Capacitor Equalizer Power Transfer with Protective Case

Model: 3S-4S

Applicable: lithium iron phosphate, NCM ternary polymer, lithium titanate

Voltage is 1.8V-4.5V

Quiescent current: 12mA

Recommended battery capacity: 35-300AH

Working temperature: 0-60 degrees

[Capacitor principle]: No external power supply is required. The working principle is that the capacitor is adapted to transmit the charge transmitter, and the entire battery pack is transmitted and balanced by using the internal energy transmission of the battery. Start balancing work. 

(1) B-, B1, B2, B3, B4 are the nodes of each battery; 

(2) The two pads marked "EN/RUN" on the board are short-circuited by default, so that the balance board enters the balance when it is powered on. In the working state, you can also disconnect the back lead and switch to control the balanced work. Generally, there is no need to connect the switch. With automatic sleep function, non-professional personnel should not connect the switch to avoid damage.

(3) The indicator light of EN/RUN is to indicate the continuous working state of the balance, and it will go out only if the battery is under voltage protection or the balance board is faulty;

(4) The se1quence of the 4-string equalizer board is generally from B-→B1→B2→B3→B4, from the low string to the high string one by one.

(5) The line se1quence of the 3-string equalizer board is generally from B-→B1→B2→B3, from the low string to the high string one by one, and B4 is empty.

[Protection switch]: With sleep protection, when the voltage is lower than 3V, the voltage will automatically stop entering the sleep state when the voltage is lower than 3.0V, and the standby power consumption is less than 0.1 mA. To cause damage, each string has a fuse, the color of the fuse is green to show U-shaped, reduce the damage to the battery, better protect the 3S 4S 5A active equalizer and prolong the life of the product.

[Original design]: Using original ultra-low internal resistance MOS, 2OZ copper thick PCB, balanced current 0-5.5A, the more balanced the battery, the lower the current.

1 x 3S 4S 5A BMS Active Balancer Board