Square Battery Indicator - SODIAL(R) 36 Volt Golf Cart Digital LED Battery Status Charge Indicator Monitor Meter Black 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