Note: last few items in stock
Battery tester for different kind of batteries: for example AAA, AA (penlite), C (baby) & D (mono) and 9V blocks. Position the battery between the spring loaded contact arms. Make sure the positive (+) and negative (-) terminals of the batterij are positioned correctly on the contacts. Observe battery condition on the tester scale. When testing 9 volt rectangular batteries touch the battery terminals to the 9V contact points on the side of the tester.