Review on Dlyfull Universal Battery Tester: LCD Display & Digital Voltage Resistance Checker For AA AAA C D 9V 12V 18650 CR123A 2CR5 CR2032 Cells by Brian Nicholas

I have been using my existing battery tester for checking my AA / AAA batteries and a voltmeter for checking the smaller ones like CR2032 / CR2025. The Dlyfull Universal Battery Tester with LCD Display is very versatile in a sense that it can be used to test many different types of batteries including the smaller CR series . As a added bonus, this battery tester also measures the batteries internal resistance which is a key indicator of the batteries' health. Although it does not show such "health" measurements in percentage, the users could search on Google to check for the normal internal resistance value to determine if the batteries are still usable.The main drawback with this battery tester is that the display is not nearly as bright as what was shown on the product page and it does not have back-lighting neither. The LCD indicator for the % charge is also not very easy to see neither. But for those who are looking for an "universal" battery tester, this is one to consider for sure.