Feature 1.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 2.Simple but effective little battery tester checker, compact size and lightweight, easy to carry 3.Easy-to-read color-coded display with good, low and replace / recharge indicators 4.Test standard and rechargeable batteries: 9V, AA, AAA, etc. 5.No batteries required to operate, after the battery is docked with the positive and negative, and then guide the pointer to jump to the corresponding area Specifications Product Name:Digital Battery Tester Type:Pointer Voltage Measurement Range:12V Voltage Measurement Accuracy:0.1V Resistance Measurement Range:10m ohm Internal Resistance Measurement Accuracy:0.1m ohm Power Supply Voltage:1.5 - 9V Product Size:11.00 x 6.00 x 2.50 cm / 4.33 x 2.36 x 0.98 inches Note No batteries included. Package Included 1 x Universal Battery Tester (Tester only) SMALL & PRACTICAL - Simple but effective battery tester checker for home (BT-168D) , compact size and lightweight,easy to carry BATTERY TESTER FOR ALL BATTERIES - The universal battery tester 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 battery tester 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 SAVE BATTERIES - 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. This will keep us from wasting perfectly good batteries by throwing out good ones