La Crosse 911-65557-INT Portable Digital Battery Tester,Black

Don’t throw away Good batteries! Test them first. The portable battery tester by La Crosse Technology tests one battery at a time. Test your rechargeable or alkaline batteries in the following sizes: AAA, AA, C, D, N and 3V lithium button cell batteries, also side contacts for 9V batteries. The compact size allows you to carry the tester with you on the go in a purse, camera bag, luggage or backpack. Simple operation: Select battery voltage, insert battery according to polarity, pressing tester to make contact you can read battery strength on LCD.

Test rechargeable and alkaline batteries
Works for all: AAA, AA, C, D, N, 9V batteries and Lithium Ion button cell
Simple Operation in 3 easy steps: 1) Select Voltage range (1.5V, 1.2V, or 3.0V depending on battery type used, 2) Pull orange tray outward and insert one battery into the tester correct direction of polarity, 3) Slide tray closed for positive connection and LED will display voltage and strength levels. Remove battery when test is complete.
Multiple types: Select 1.5V for alkaline AA, AAA, C, D, & N batteries; Select 1.2V for rechargeable AA, AAA, C, D & N batteries; Select 3V for lithium button cell battery
Touch contacts on left side of tester for 9V battery