HIGH COMPATIBILITY UNIVERSAL BATTERY TESTER For all common battery and accumulator sizes: AA, AAA, N, D and 1.5V button cell type LR44. With the digital LCD battery tester, you can test the battery anytime and anywhere. HIGH PRECISIONThe battery tester can accurately check the remaining power, display the status charging via LCD scale, suitable for all common batteries and rechargeable batteries. Helps you track battery capacity. EASY TO USEMade of high quality ABS plastic, lightweight and compact , easy to use, perfect for on the go and travel, is easy to carry and store. CLEAR DISPLAY The digital battery tester has a clear LCD display that allows you to read the digits intuitively and easily, making reading clear, easy and reliable. QUICK JUDGMENT The battery tester can check the battery status, completely avoiding wasting the battery, color coded : green means good, yellow means weak and red means bad. It shows exactly whether the battery is bad, low or good voltage.