The ANENG BT189 digital battery consumption level tester is a simple device for quickly checking the discharge level. The device allows you to measure battery consumption based on their voltage. technical data: ANENG BT189 battery tester manufacturer: ANENG model: BT 189 Analog battery consumption indicator mechanical lever for adjusting the size of the battery power supply from the measured battery Wide application: 1,24,8V AA, AAA, D, C, 6F22, 18650, CR2032, LR44 batteries, 9V battery, etc. Lithium battery 3,7 V: 18650, 16340, 14500, 10440, 21700 Battery 1,5V: AAA, MN2400, R03; AA, HP7, MN1500, UM3; C, HP11, MN1400, SP11, LR14, UM2; D, HP2, MN1300, SP2, R20, UM1 - 9V battery: PP3, MN1604, 6F22, 006P Operating temperature: -25 55 Matter: ABS Color: Grey Test Range: 1,2-4,8V, 9V. Item Size: approx. 52,6 * 53,9 * 23,4 mm Item weight: approx. 29 g Package Size: approx. 53 * 54 * 24 mm Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.