SMALL & PRACTICAL - Simple but effective little battery tester checker(BT-168) , compact size and lightweight,easy to carry , TESTING DEFFERENT BATTERY TYPES - It works with standard and rechargeable household batteries: AA, AAA, C, D, 1.5V,9V and button type , REQUIRE NO BATTERY TO OPERATE - Easy-to-read ,the analog display needle moves on a color-coded, calibrated scale to quickly identify "good" (green), "low" (yellow), and "replace/recharge" (red) battery status. No batteries required.It is activated by the battery being checked , PERFECT FOR HOME USE - Great small tool can tell you if your battery is good, low, or needs to be replaced.A must buy for anyone who uses regular or rechargeable batteries on a regular basis , 100% MONEY BACK GUARANTEE - Click the ADD TO CART BUTTON NOW & enjoy this pratical digital battery tester form D-FANTIX, with a vision to provide 100% satisfied shopping experience to our customers. Save your money - This will keep us from wasting perfectly good batteries by throwing out good ones ,