Rayovac Battery Tester
Digital keyring-sized battery tester with storage compartment for 2 batteries.

Digital Battery Tester
Digital battery tester with LCD display. Simply lay a battery into the tray and slide upwards to test. Ideally sized to fit on a keyring.

Keyring Battery Tester
Red & black keyring battery tester with built-in compartment for 2 batteries.

Rayovac Battery Holder
Keyring sized battery holder. Holds approximately 6 hearing aid batteries.