This is an active BMS, it supports 3S-8S Li-ion and 4S-8S LiFePo4 6S-8S Lto

It also has active equalization current 2A

You can set equalization voltage and charge and discharge protection parameter through APP

Can display the battery voltage single series

After connecting the BMS, please use the power supply which is 5v higher than the battery voltage to activate it.

Product character:

1. Active balance functionality, lose battery capacity no need to balance sales voltage difference, increase battery use efficiency for 95%

2. It has the protections of overcharging/overdischarging/overcurrent and short circuit, etc.

3. Single battery series voltage range is 1~5V, accuracy is 5mV

4. With coulomb meter function, the remaining power is very clear

5. BT communication function, battery status can be displayed on APP

6.RS485 and can be customized（need to contact us for custom made）

Balanced Shape: Active EQ

Active equalization current: 2A

Internal resistance: 0.3MΩ

Rated discharge current: 300A

Maximum discharge current: 400A

Over Current Protection (adjustable): 10-300A

Wiring method: common port

Monomer voltage range: 1V-5V

Voltage acquisition accuracy: ± 5mV

Battery cell overcharge protection voltage: 1.2V-4.35V (adjustable)

Battery cell overcharge protection recovery voltage: 1.2V-4.35V (adjustable)

Battery cell over discharge protection voltage: 1.2V-4.35V (adjustable)

Battery cell over-discharge protection recovery voltage: 1.2V-4.35V (adjustable)

Temperature detection quantity: 3 pieces

temperature: -20~70℃

Power requirements: 24V ~ 100V, can be powered by battery or external power supply

Power dissipation: balanced: 10mA and 100V, unbalanced: 6mA and 100V

BMS Package including:

1*JK smart bms (Built-in Bluetooth)

1*Cable

1*Temperature Sensor

Other Accessories

1*Power switch (optional)

1*RS485 to USB cable(optional)

1*2inch LCD display (optional)

1*3.2inch LCD display (optional)

1*4.3inch LCD touch display (optional)

FAQ:

No power on

1. Ensure that the last "B +" line has been connected to the battery total positive pole.

2. Charge activation, make sure the charger voltage is more than 4V above the battery 

pack voltage to activate.

3. Check whether the charger has voltage output.

voltage inaccuracy

Measure the actual total voltage of the battery pack with a multimeter, and fill in the actual 

total voltage into the "Voltage Calibration" in the parameter setting page.

The current is not allowed

1. BMS B- and P- are two 7AWG wires, both need to be connected in parallel, otherwise it will 

lead to current error.

2. Use a clamp meter to measure the actual current of the battery pack, fill in the actual current into

the parameter setting page "current calibration" inside; the larger the actual current, the higher 

the calibration accuracy.

Capacity is not allowed

The first step, first set the battery capacity, the battery was how much, set how much capacity can

be set slightly larger, for example, the battery capacity of 100AH, can be set to 120AH or 150AH.

The second step, through the electric instrument to the battery discharge, the battery discharge, 

put the protection board prompts the single under voltage protection.

The third step is to charge the battery, don't interrupt when charging, and keep charging until the

 BMS prompts the single-unit over-voltage protection.

After doing the above steps, the capacity will be automatically updated, APP battery capacity 

shown is the actual capacity of the battery, this time the SOC is also accurate, all the capacity-

related are accurate.

The number of designed strings does not match the actual number of strings

1. Check the parameter settings inside the "number of single unit" is set correctly.

2. If there is no voltage in the middle of a 2S or more strings, check whether the collection line is off.