Features 1、APPLICABLE BATTERY: The tester supports 1 to 24 series of lithium batteries (batteries with voltage between 2V to 4.5V). 2、DATA DISPLAY: The tester is able to display voltage of each string, total voltage, maximum string voltage, minimum string voltage, maximum voltage difference of battery pack, average voltage, equalizing voltage, number of strings of battery pack. 3、MULTIFUNCTIONAL: There is reverse connection, high voltage (greater than 4.5V), low voltage (less than 2V) warning and prompt. Accuracy of each voltage string is about 0.003. Supports mixed insertion (not from B1); Switch between Chinese and English. 4、EASY CARRYING: The tester is small in size and light in weight, you can easily take it with you for convenient use. 5、WITH ACRYLIC BAFFLE: Comes with an acrylic baffle, the tester is wear resistant, impact resistant, ensures a long life span. Specification Item Type: 24 String Battery Voltage Tester Material: PCB, Acrylic Application: Battery voltage test Package List 1 x Tester 1 x Board 1 x USB Cable 1 x Manual