Description: 【Wide Voltage Compatibility】: Accurately tests battery energy levels across two voltage ranges 【Instant Testing】: Simply insert the battery to get a clear digital reading within three seconds. Ideal for quick checks at home or on the go 【No External Power Needed】: Operates without its own battery; it draws power directly from the battery being tested. Ideal for outdoor use or emergency situations where replacing tester batteries isn’t possible 【Clear LCD Display】: Features an easy read LCD screen that instantly shows remaining charging levels. Built in reverse polarity protection ensures secure operations even if batteries are inserted incorrectly 【Portable Design】: Compact and lightweight, fits easily in your pocket or toolbox. Making it great for home use or work sites Size Chart: 10.5cmx7.7cmx1.42cm/4.13inchx3.03inchx0.56inch Package Includes: 1 Battery Tester Note: Please allow slightly errors due to manual measurement and different monitors.