- The Alecto BTT2 is a universal battery tester that allows you to see the status of your battery capacity at a glance on the digital display.
*The BTT2 is easy to use and works with all commonly used batteries, such as: AA, AAA, C, D, 9V block.
*Place the battery correctly between the + and - side of the battery tester (a 9V battery is placed at the bottom).
*The holders are flexible and can handle the sizes of the most common batteries.
*With proper placement of the battery, you can immediately read the status of the battery on the battery tester.
*There are 4 different values ​​that are clearly stated on the tester.