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) 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 Simple but effective little battery tester checker, compact size and lightweight, easy to carry Easy-to-read color-coded display with good, low and replace / recharge indicators Test standard and rechargeable batteries: 9V, AA, AAA, etc. 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