Feature: 1. Accurate Testing: This battery voltage tester is designed to accurately and quickly read the voltage level of almost all types of battery, including AA, AAA, C, D, 9V, and various button cell 2. Simple to Operate: Simply insert the battery into the correct slot and read the easy to view indicator bar for an accurate battery level reading, which is convenient to operate and saves time 3. Portable and Compact: Lightweight and small in size, this battery voltage detector can easily fit in your pocket, allowing you to carry it anywhere and anytime, suitable for more testing scenes 4. Versatile Solution: With this battery voltage tester, you can avoid the hassle of guessing which battery is still well and which is dead, preventing unnecessary purchases of new battery 5. Wide Compatibility: Capable of testing a wide range of battery voltages from 1.2V to 5.0V, ensuring compatibility with various battery types, meeting your diverse testing and detection needs Specification: Item Type: Battery Tester Product Material: ABS Voltage: 1.2V-5.0V Transfer Current: 80mA Test Range: C, AA, AAA, D, N, 9V (6F22) battery and 1.5V button cell 9V: PP3, MN1604, 6F22, 006P 1.5V: AAA, HP16, MN2400, R03AA, HP7, MN1500, UM3C, HP11, MN1400, SP11, LR14, UM2D, HP2, MN1300, SP2, R20, UM1 various button cell . Package List: 1 x Battery Tester 1 x User Manual