Universal Battery Tester, Digital Battery Tester for AA AAA CD 9V, 1.5V Battery Voltage Checker

General description Practical helper for checking the current battery level, this digital battery tester is ideal for determining whether batteries are worn out. It quickly measures battery voltage and displays the results digitally, making it easy to assess battery health. Technical specifications Compatible with AAA, AA, C, D, 9V block, and button batteries Operates without an additional power supply Cursor adaptable to different battery sizes Three-color simulation for clear result indication Usage Insert the battery according to the polarity direction Read the displayed voltage Test battery life anytime, anywhere