Description: Battery Capacity /Voltage Dual Parameter Display - 12V 24V battery monitor can test the battery capacity (7-segment display - 13% 26% 39% 52% 65% 78% 91%). At the same time, the battery tester can indicate the voltage value. Dual USB Port Support Fast Charge - Dual USB Port support fast charge, which multi-protocols, such as QC2.0/QC3.0/FCP/SCP/MTK/ . Our product adopts an IP6505T chip to support a fast charge. Support 3 Types of Battery Test - The product can support lithium battery, iron-lithium battery, and -acid battery (12V -acid battery default). Reverse Connection Protection - The product Input anti-reverse protection, Output over-current, and short circuit protection. Applications - It can be used on a 12V car or a 24V truck. Concise LED screen displays the battery voltage/capacity, fully controlling the battery capacity. Package Includes: 1 Piece Battery Voltage Point Gauge Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you!