Nartel® LED Digital Battery Tester Battery Checker Multi Size for AA AAA C D 9V 1.5V Button Cell Batteries (Requires No Battery to Operate) : Amazon.co.uk: Electronics & Photo
Using Battery Tester To Test Batteries AA AAA C D 9V - YouTube
Battery Tester for AA, AAA, C, D & 9V by Faithfull - BT1 | L&S Engineers