BT189 Ultra-small Battery Tester 9V AAAAA Button Cell Universal Household LCD Digital Display Battery Tester Power Bank Detector Ultra-small size : The BT189 battery tester is incredibly compact, making it easy to carry around and use on-the-go. Universal compatibility : This battery tester is compatible with a wide range of button cells and household batteries, making it a versatile tool for any tech enthusiast. LCD digital display : The BT189 features a clear and easy-to-read LCD display that shows the battery's capacity and voltage levels. Power bank detector : With the BT189, you can easily detect whether a device is a power bank or not, ensuring that you never run out of power unexpectedly. Product selling points and features: 1. No power supply required, ready for use and testing 2. Suitable for various types of batteries 3. Quick detection 4. High definition LCD digital display screen 5. Ultra small size, easy to carry, small size, and lightweight Product parameters: Product Name: Battery Tester Product material: ABS Product weight: approximately 31.3g Product model: BT189 Size specification: 92.2 * 61.4 * 13.5mm Tested types: N-type, No.1, No.2, No.5, 14500, No.7, 1044016340, button battery, 9V battery (ship without the battery) Packaging and list: Blister packaging Battery tester * 1 Noted: If the quality problem of the product is found after receiving the express, please do not open the dispute at will. Please contact our after-sales customer service to solve it in a timely manner. Thank you for your support and understanding! _x000D_ _x000D_