• No power supply required, battery voltage can be quickly measured with the tester
• With a clear LCD screen, digital display test results
• Suitable for detecting 9V, type 1 battery, type 2 battery, AA, AAA, button cells, etc.
• Small size and easy to carry

Instructions:

• The 9V battery is directly connected to the two test holes on the side of the tester. Pay attention to the positive and negative poles
• For other batteries, please open the test arm at the top of the tester with your hands and snap the battery in. Pay attention to the positive and negative poles

Specification:

• Model: BT189
• Material: ABS plastic
• Size: 92x65x14mm
• Testable types: D type/N type/Type 1 battery/Type 2 battery/AA/14500/AAA/10440/16340/button cell/9V battery