[Use effect]After the equalizer is installed, each battery can be full and discharged, so as to achieve the purpose of increasing the capacity of the whole battery. [Support series]Support multiple series use, at least 3 series reconnection between the two plates, the more the better. [Work independently]Can not replace the use of the protection board, does not participate in the charge and discharge control of the protection board, and the parallel relationship with the protection board, work does not affect each other. [Other functions]Low pressure alarm, temperature protection. [Use skill]The best effect is to balance while charging, because the pressure difference is the largest when it is fully , and the balanced current is also large, so it can be balanced well soon. When it's full. After unplugging the charger, the balance be fine for a few hours. The best effect is to balance while charging, because the pressure difference is the largest when it is fully , and the balanced current is also large, so it can be balanced well soon. When it's full. After unplugging the charger, the balance be fine for a few hours. [Actual effect test]Connect the cable and install the plug, do not plug in the equalizer yet. With a multimeter, measure each section of voltage on the equalizer plug and record it before inserting the equalizer. the switch and the red light is on. In an hour. Then measure the primary voltage according to the above, and record it for a comparison before and after. Be careful not to charge. Condition testing, because the pressure difference is the biggest inaccuracy when it is nearly fully . Color: As Shown Material: PC Package Contents: 1 * lithium battery balancing board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.