This battery tester is suitable for testing different types of batteries, such as AA, AAA, C, D, 1.5V, 9V, battery cells, 18650, etc., making your life more convenient. This battery detector can show you the battery capacity, which is convenient to replace the battery at any time, making your life more convenient. The data of this digital battery tester is easy to read, and the battery level can be displayed quickly and easily, saving you time and energy. The design of this battery capacity tester is small in size and light in weight, so you can carry it with you without taking up too much space. Excellent tools can remind you to replace the battery and check the battery capacity to avoid waste. Material:ABS colour:Black Package Contents: 1 x battery tester Only the above package content, other products are not included. Note: Light 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.