Compact and portable design: The BT1 Digital Battery Tester features a size of 116 x 66 mm, making it easy to carry and suitable for onthego battery testing. Easytoread LCD display: An intuitive LCD clearly shows battery capacity, helping you eliminate guesswork when checking your batteries. Versatile compatibility: Designed for both 1.5V and 9V batteries, it can test AA, AAA, C, D, N, and button cell batteries, making it a practical tool for a range of devices. Accurate voltage measurement: The Battery Capacity Meter provides precise voltage measurement with an accuracy of 0.01, ensuring reliable assessments of your batteries' health. Use at home: Quickly verify batteries for remote controls, wireless keyboards and mice, flashlights, toys, and other everyday devices. Use on the go or outdoors: Test batteries for portable devices during travel, outdoor activities, or emergencies to ensure devices operate when needed. Inventory and replacement planning: Check spare batteries before stocking up to avoid unnecessary purchases and ensure you have reliable backups.