D-FantiX Battery Tester, Universal Battery Checker for AA AAA C D 9V 1.5V Button Cell Batteries (Model: BT-168) 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 household battery tester. This will keep you from wasting good batteries by throwing out good ones Test battery voltage to determine the capacity of battery is low or high,not detect capacity. Note: aa aaa Battery Tester is activated by the battery being checked,test fast to avoid battery drain 1 x D-FantiX Battery Tester BT-168