IOGEAR JuiceMeter Portable Battery Tester GBT001W6 IOGEAR JuiceMeter GBT001W6 Portable Battery Tester General Features: Gray and green color scheme Lightweight and compact Reads AA, AAA, C, D, N, 1.5 Volt and 9 Volt batteries Compatible with all alkaline, NiMH or NiCD batteries Easy-to-read gauge points at Replace, Weak, or Good No power required Attachment hole for optional keychain portability