Universal Battery Tester Checker AA, AAA, 9V PP3, 1.5V Am
• ✅ Multi-size compatibility: Tests AA, AAA, C, D, 9V (PP3), and button cell batteries. Universal Battery Tester – Compatible with AA, AAA, C, D, 9V & Button Cells. • Use the red sliding arm to adjust for AA, AAA, C, and D batteries.