DC 6v/12v Lead-acid Lithium Battery Level Display Capacity Tester LED Indicator 
 
Features: 
color : red
Work current:< 5-15mA (with backlight) the battery voltage lower, the current lower
8 grid electric quantity dispay : 10% 25% 40% 50% 60% 75% 90% 100%
Voltmeter accuracy :1%
Using temperature range: -10- 65c
Operating humidity:10-80%
Black wire connect negative electrode
Red wire connect positive
External dimension:48×29×21 mm
With a shell, easy to use stand-alone or embedded in the panel on the product.
Using range : 6v/12v Lead-acid battery,