1. With acrylic shell baffle 2. Support 1-24 series lithium battery packs (batteries with voltage between 2V-4.5V) 3. Display the voltage, voltage, maximum string voltage, minimum string voltage, maximum differential voltage, average voltage, equalizing voltage and number of strings of each string 4. The accuracy of each string of voltage is about 0.003 5. There are reverse connection, high voltage (more than 4.5V), low voltage (less than 2V) warning sounds and prompts Type-c and DC power supply modes (5V power supply) Supports mixed insertion (not starting from B1) Can switch between and English Port: 24 series lithium battery expansion board port Power supply port: Type-c and DC5V interface Applicable product: support 1-24 series lithium battery pack of application: applicable to voltage detection of single battery pack/differential pressure repair of lithium battery pack Product size: 14 x 9.5 x 3.6cm Operation steps: 1. Turn off the power switch after the equipment is powered on 2. The battery pack is wired according to the on the device or adapter board 3. Check whether the display data on the display screen is normal. If it is abnormal, check the wiring or battery pack Colour:blue Material:PCB+metal Package Contents: 1 x 1S-24S lithium battery pack voltage test screen 1 x DC power cord Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.