Features: With Display switch, which can greatly save valuable battery power. It is not long-term display, the service life is greatly extended. Dual display electricity and voltage at a glance. The display is more intuitive. The upward 8 color bars show the battery power and the downstream voltage meter (display battery voltage), and the voltmeter decimal point automatic shift accuracy is higher. 12V lead acid battery voltage range:(can be used with 4 strings of lithium iron phosphate battery) The battery voltage is greater than 9.7v and is 1 grid The battery voltage is greater than 10.2v, and the battery is 2 grids bright. The battery voltage is greater than 10.7v, and the battery is 3 grids bright. The battery voltage is greater than 11.1v, and the battery is 4 grids bright. The battery voltage is greater than 11.7v, and the battery is 5 grids bright. The battery voltage is greater than 12.2v, and the battery is 6 grids bright. The battery voltage is greater than 12.6v, and the battery is 7 grids bright. The battery voltage is greater than 13.0v, and the battery is 8 grids bright. Specifications: 8-grid battery indicator: 10% 25% 40% 50% 60% 75% 90% The accuracy of the voltmeter is about 3% Working temperature: -10 ~ +65 ℃ Working humidity: 10~80% (no condensation) for Shell material: ABS Panel size: 48x29mm/1.89x1.14inch Color: Black LED display color: Red Quantity: 1 Pc Package Includes: 1 x Battery Capacity Indicator note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!