WUJUN 2Pack Battery Tester Checker 165 cubic centimeters, Yellow,Green,Red\nDescription\n\nFeatures:\n--Multi Purpose Use - can be used to test different type of household batteries like AA, AAA, C, D, 1.5V,9V and button type\n--Require on Battery - activated by the battery being checked, no battery needed for operation\n--Simple but Effective - compact size and lightweight, portable effective battery tester, a must buy for anyone who uses regular or rechargeable batteries on a regular basis\n--Easy to Use - identify battery status simply by the analog display needle, \""good\"" (green), \""low\"" (yellow), and \""replace/recharge\"" (red)\n--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. Don't forget: The Battery Tester is activated by the battery being checked. Keep test times as short as possible to avoid unnecessary battery drain.\nProduct Details:\n--Publisher: WUm