Easy to use: The digital display screen immediately shows the battery level. There is a summary table on the back of the product. Compared to the numbers on the back, you can clearly see the performance of all types of batteries at a glance.Easy to operate: Activated by the tested battery, it can be operated without the need for a battery. The sliding control is adjustable, and the battery tester is compatible with most batteries and button batteries.Accurate data: The digital battery tester is faster and more accurate than a regular battery tester, without waiting.Easy to carry: A simple and effective small battery tester inspector with a compact and lightweight size, easy to carry.Multi purpose: Can be used to test different types of household batteries, such as AA AAA、C、D、9V、1.5V、18650、 The button battery.Model: BT-168 PROSize: 11 6 2.5 centimetersBattery capacity: 1.5V | 9VGood: 1.5V-1.28V | 9V-7.8VLow power consumption: 1.27V-1.15V | 7.7V-6VReplacement: below 1.15V | below 6VPackage includes: 1 battery tester