Features:
Works for 36V/48V(optional) battery.
High reliability, low cost and compact size.
Display of 10 segment LED bar graph.
LED flash for low charge warning.
Memory option to recall last charge level.
Specifically designed to monitor the power level of battery while charging or discharging.
Provides instant battery status to permit effective management of the charging.
Easy to install and operate.

Specifications:
Capacity: 1 Red 2 Yellow 7 Green color LED for indicator
Resolution: 10%per LED segment
Operating Voltage: 36V / 48V (Optional)
Operating and Storage Temperature: -20°C~85°C
Humidity: 95% RH at 32°C or more for 2 Hours
Operating Current: 20mA nominal
Accuracy: +/- 0.01%
Product Size: 5.3 * 3.8 * 3.0cm  / 2.1 * 1.5 * 1.2in
Product Weight: 19g / 0.7oz
Package Size: 6.4 * 5.0 * 4.1cm / 2.5 * 2.0 * 1.6in
Package Weight: 34g / 1.2oz

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)