Sku：AHA00063Package list: 1 x Digital Battery TesterDescription：The Battery Tester can be used to test the following sizes : 1.5V--- AAA，HP6，MN2400，RO3，AA，HP7，MN1500，UM3C，HP11，MN1400，UM2，D，HP2，MN1300，UM1 and Cell Button Type batteries. 9V---PP3，MN1604，6F22，006P How to read? Good: 1.5V~1.28V Low power: 1.27V~1.15V Need replace Below 1.15V(For Battery Size 1.5V) Good: 9V~7.8V Low power: 7.7V~6V Need replace Below 6V(For Battery Size 9V) Help you find useful batteries，deal with the batteries with no powerful!Then make your house cleaner and more comfortable. 1， Digital Battery Tester Checker for 9V 1.5V and AA AAA Cell 2， Check the power level of all 1.5V， 9V， and 1.5V miniature cells. (a little higher than 9V is OK，not higher than 9.5V， it will be burned-out.) 3， Can quickly test the capacity of your batteries. 4， Lightweight(0.12KG/4.23 ounce)， measurement: 11× 6× 2.5 CM (4.33x2.36x0.98 inches) 5， The battery tester tests 9V，1.5V，AA，AAA，C，D and Cell Button Type batteries.(Test multiple sizes of batteries in one unit) 6， Tester does not require any internal batteries to operate. NOTE : 1. You can simply test battery voltage to determine whether the capacity of the battery is low or high.It won't directly detect the battery capacity precisely 2.If the digits did not show check that battery is touching both contacts，other wise the battery is completely dead. 3.The Battery Tester is activated by the battery being checked.Keep test times as short as possible，to avoid unecessary battery drain.