20pcs 1S Lithium Battery Pack Power Indicator Board Electric Vehicle Battery Power Indicator 4V Power Storage

Instructions Connect the positive and negative terminals of the display board and connect them to the positive and negative terminals of the tested battery The digital display shows the real time battery power Power parameters 1S lithium battery full charge 4 2V Battery voltage is greater than N X 3 3V light 1 grid power The battery voltage is less than N X 3 3V the power indicator is all off indicating that the battery is lower than 3 3V the battery needs to be charged N is for the number of battery cells Note The above data is a reference value there will be about 2 error range Package included 20 X 1S lithium battery pack power indicator board