Gardner Bender Analog Battery Tester Specialty Meter at Lowes.com
I see the Duracell power check batteries posted often but no one seems to remember the Copper Top Tester. I recently found my old one. Tested it out with a new battery. :
Amazon.com: Duracell Ultra Advanced AAA Battery with Power Check Value Pack : Health & Household
P249 - DURACELL - DURACELL BATTERY TESTER controllo carica della pila
Duracell PowerCheck History: An Energizer of a Battery Patent Battle