MZD8391 Digital Battery Tester - AA AAA C D 9V 1.5V Button Cell Battery Checker for Household Devices (No Battery Required) - Perfect for Flashlights, Toys, Remote Controls & Electronic Gadgets (1 Pack)

MZD8391 Analogue Battery Tester, Battery Checker for AA AAA C D 9V 1.5V Button Cell Household Batteries (No Battery Required for Operation) Tons of batteries all over the house yet cannot find a good one to replace? Still have no idea which battery to keep and which to throw away? Things seem to be running a bit slow? Still running slow after you replace the batteries? Get Our Battery Tester to help you find useful battery! Test batteries in seconds, tells you when it’s time to get a new one. User-Friendly Easy to read Quickly test battery level Compact size and lightweight design Self-powered, no need internal battery 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 Features Size: 11 × 6 × 2.5 cm Require no battery for operation Battery Size - 1.5V| 9V Good: 1.5V-1.28V| 9V-7.8V Low Power: 1.27V-1.15V| 7.7V-6VReplace: Below 1.15V| Below 6V

Multi Purpose Use - can be used to test different type of household batteries like AA, AAA, C, D, 1.5V,9V and button type

Require on Battery - activated by the battery being checked, no battery needed for operation

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

Easy to Use - identify battery status simply by the analog display needle, "good" (green), "low" (yellow), and "replace/recharge" (red)

OTE 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.