Features: Battery Tester Accurately measures button cells and lithium batteries like 18650/21700/26650 with double voltages/charging levels displays for diagnostics. Features energy efficient ABS construction, without external power required, and portable design for precise battery analysis in any environment. Ideal for homeowners, electronics technicians, and enthusiasts managing household devices, or rechargeable battery collections. Perfect for testing flashlight batteries during camping trips, verifying toy cell voltages before use, or organizing workshop power tool battery inventories. Combines drop resistant ABS with double screen visualization for battery health assessments. Specifications: Component: ABS Size: about. 10.5x7.7x1.42cm/4.13x3.03x0.55in Suitable for all kinds of battery testing: 9V/12V 23A/1.55V button/18650/21700/26650/14500/10440/16340 battery Package Includes: 1pc Battery Tester note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color. ONLY include battery tester, other accessories NOT include.