Used for connecting two batteries in series, used in a 24V battery pack LED digital tube display, convenient for customers to read the voltage of the battery Improved battery performance Increased battery pack efficiency Enhanced safety and Extended battery pack lifespan Flexibility in cell replacement and Compatibility with different cell characteristics Note:Due to different factory batches, if there is any difference in the appearance of silk screen printing, it not affect the use. Colour:Black Material:Plastic Package Contents: 1 * Battery Equalizer 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.