1. Battery Performance Assurance: Our Digital Battery Tester assures accurate detection of a low battery with clear prompts, making it easy to replace the battery and keep it functioning optimally. Innovative button battery detection allows simple usage for monitoring battery levels 2. Strong Compatibility Across Devices: Boost your productivity with this digital battery tester that detects and tests various types of batteries commonly used in's devices, ensuring optimal performance. With strong compatibility across devices, it can detect button cells and multiple voltage ranges from 1.5V to 9V 3. Assures Safety: The Digital Battery Tester is the perfect tool for preventing battery failure. Avoid the risk of getting stranded with its lightweight, compact design that assures safety of use 4. Operate Easily: Enjoy a easy testing experience with our digital battery tester, as there's no need to install batteries. Simply place the battery on the detector, and get a precise assessment without any unnecessary steps 5. Battery Efficiency Simplified: Equipped with an LCD screen that promptly displays battery status through intuitive, color-coded graphics, ensuring a clear and concise reading<br><br>This digital battery tester is a must-have tool for every household. It can accurately detect button batteries and comes with an ABS insulating shell for safety. You can easily use it without installing batteries. The LCD screen displays the results clearly, making it convenient for everyone to use. Name: Battery Tester Measurable Range: Applicable to for C//D//AA//AAA batteries//9V batteries 3V//1.5V button batteries Color: Blue Material: plastic<br><br>Package Contents: 1 * Battery Tester<br><br>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.