... 9V are testable Three colored indicators give accurate and easy battery power reading Indication: red-need to change, yellow- ... battery, AAA-size battery, C-size battery, D-size battery, 9V battery, button cell battery, alkaline battery, lithium battery, rechargeable battery Good for any battery user Let's test battery ... away Size: 30mm x 22mm x 78mm Universal Battery Tester AA AAA C D N 9V Checker