Usage Tips: The voltage gap of each battery must be within 0.5V. When the battery voltage difference does not reach more than 0.1V, the light on the balance board is triggered by mistake. The light actually has no balance current when it lights up, and it will automatically go out after a period of time. So We suggest re-plugging the cable to solve the problem. Note that It takes time to equalize the voltage, hot is normal and it does not take effect immediately after plugging it in. Note: Before connect the balance cable to the balance board, be sure to check whether the connections of each section of the battery pack are correct, and do a good job of insulating the bottom of the board and the battery string connection terminals. DEFAULT setting fit for NCM/LFP battery, If you use for LTO battery, Please remove the previous short circuiting pad and then re short circuiting the LTO pad (with a rectangular short circuiting mark on the board). Working Voltage: 1.8V-4.5V, suitable for Li-ion,LiFePO4,LTO battery. The quiescent current is about 7mA, and the battery capacity is recommended to be used between 30-200AH/Per Balancer.High-capacity batteries can be connected in parallel with multiple equalizers. With under-voltage sleep protection, only detecting the B1 battery voltage, the equalizer will automatically stop entering the sleep state when B1 voltage NCM/LFP<2.7V or LTO<1.8V, and the standby power consumption is less than 0.1mA. Working Principle: Flying capacitor transfer charge transporter, Balancer board is connected to the battery to start the balance work, using the original brand new ultra-low internal resistance MOS, 2OZ copper thickness PCB. Balance current 0-5.5A, the more balanced the battery current is Small, reserved for the dormant switch wiring position, the dormant power-off mode working current is less than 0.1mA, and the balance voltage accuracy is within 5mv! The quiescent current is about 7mA, and the battery capacity is recommended to be used between 30-200AH/Per Balancer.High-capacity batteries can be connected in parallel with multiple equalizers. With under-voltage sleep protection, only detecting the B1 battery voltage, the equalizer will automatically stop entering the sleep state when the B1 voltage NCM/LFP<2.7V or LTO<1.8V, and the standby power consumption is less than 0.1mA. Working voltage: 1.8V-4.5V Suitable for ternary lithium(Li-ion), lithium iron phosphate (LiFePO4), lithium titanate(LTO). The whole battery participates in the active equalization of energy transfer at the same time. 0.1V differential voltage 1A equalizing current. The differential voltage is bigger that equalizing current is bigger. The maximum allowable working current is 5.5A. Working principle: Flycap-capacitor transfer charge transporter, Balancer board is connected to the battery to start the balance work, using the original brand new ultra-low internal resistance MOS, 2OZ copper thickness PCB. Balance current 0-5.5A, the more balanced the battery current is Small, reserved for manual sleep switch, sleep current mode is less than 0.1mA, the balance voltage accuracy is within 5mv! The quiescent current is about 7mA, and the battery capacity is recommended to be used between 30-200AH/Per Balancer. With under-voltage sleep protection, only detecting the B1 battery voltage, the equalizer will automatically stop entering the sleep state when the B1 voltage NCM/LFP<2.7V or LTO<1.8V, and the standby power consumption is less than 0.1mA. Board size: 91x70x16mm/ 3.58x2.75x0.63inch Balance cable length: 400mm/ 15.7inch One LED indicator: It will always be on during normal operation, but it will not turn on when there is a problem or malfunction. RUN pad: you can add a switch to control the balancer. Default short connect, let balancer working. if disconnect, it will not working. Note: Please start wiring from the total negative pole, followed by B-, B1+, B2+, .... , B8+, B9+.(Test per string battery voltage whether is right before connect to Balancer board). Package Includes: 1x 8S Balancer Board 1x 9-Pin Cable