MAXIMUM DURABILITY - Built with high-quality materials, the Jupio Battery Tester ensures long-lasting performance and reliability for all your battery testing needs, backed by a 3-year warranty. WIDE COMPATIBILITY - This versatile battery tester accurately checks the voltage of 1.5V batteries, making it an essential tool for testing various household batteries, ensuring you're never left guessing. EXCEPTIONAL VALUE - Get precise battery testing capabilities at an affordable price with the Jupio Battery Tester, offering a cost-effective solution for maintaining your devices and saving money. OPTIMIZED CAPACITY CHECK - Quickly and easily determine the remaining capacity of your batteries with the Jupio tester, helping you decide which batteries are still good for use and which need replacing.