This universal battery tester helps you decide which batteries to keep and which to discard. Place the battery between the two test contacts and use the easytoread colorcoded display to see the result at a glance. It shows instantly whether the battery is dead or still has usable life, helping you avoid unnecessary replacements and keep essential devices ready. Key features Compatibility: Tests common 1.5V batteries (AA, AAA, C, D) and 9V batteries, with universal support for button batteries. Simple operation: Insert the battery between the two test points; the status is displayed immediately. Readability: Easytointerpret, colorcoded meter indicates the remaining power level at a glance. Design: Compact, handheld tester designed for convenient use at home, in the office, or on the go. What it tests 1.5V batteries: AA, AAA, C, D 9V batteries Button batteries (as part of the universal checker capability) 23 practical use scenarios Home: Quickly check batteries for remote controls, toys, flashlights, and key devices to determine if they need replacement or can still provide life. Office or workshop: Manage stock by testing and old batteries before stocking shelves or recycling, reducing waste and saving costs. Travel or camping: Bring the tester on trips to verify spare batteries before you need them, ensuring devices work when you need them. This tester provides a straightforward, trustworthy way to assess battery condition without guessing, helping you save time and money while keeping devices ready for use.