This Battery Indicator is specially designed to monitor the power level of lead-acid battery with LED bar graph.
Specifications: 

Capacity: 1 Red 2 Yellow 7 Green color LED for indicator 
Operating voltage: 36V 
Operating and Storage Temperature: -20¡æ~85¡æ 
Operating current: 20 mA nominal 
Accuracy: +/- 0.5% 
Compatible Models: Golf Cart or other 36V volt DC battery powered equipment 
Product size: 5.3 * 3.2 * 3.0cm / 2.1 * 1.3 * 1.2in 
Product weight: 21g / 0.8oz 
Package size: 6.4 * 5.0 * 4.1cm / 2.5 * 2.0 * 1.6in 
Package weight: 37g / 1.3oz 

Note:
Please connect the suitable voltage, as the mark in the back side of battery indicator. Voltage too high or too low will makes the battery indicator damaged or work abnormally. 

Package List: 
1 * Battery Indicator 
1 * Pack of Accessories 
1 * User Manual ( English )

• High reliability, low cost and compact size,Works for 36V battery
• LED Flash for low charge warning. Memory option to recall quantity of electricity
• Specifically designed to monitor the power level of battery while charging or discharging
• Provides instant battery status to permit effective management of the charging
• Display of 10 segment LED bar graph. Easy to install and operate

High reliability, low cost and compact size,Works for 36V batteryYANGHX