CT-CE-5000 Series Laptop Cell Tester is used to determine the remaining capacity of the laptop battery and to identify any cells that may be damaged or not functioning properly. It is connected directly to the battery or laptop and use a series of tests to determine the battery's condition. It may include measuring the voltage of each cell, checking the overall capacity of the battery, and assessing the battery's ability to hold a charge. This CT-CE-5000 Series Laptop Cell Tester helps to extend the life of the battery and avoid unexpected power failures when working on the go.