The Universal Battery Tester is a must-have tool for every household. With its ability to accurately test the capacity of various battery types, you can now easily determine the remaining power of your batteries. No more guessing or wasting unused batteries! This battery tester is designed to be user-friendly, with a clear digital display that shows precise results. Whether you need to check the capacity of AA, AAA, C, D, or 9V batteries, this versatile tester has got you covered.