National Luna Dual Battery Monitor W/ Alarm Suits All Dual Battery Systems NLBMDA

National Luna Dual Battery Monitor with Alarm (suit all types of Dual Battery Systems and can also be used to measure 2 x 12v batteries in a 24v system) NLBMDA
Simple and easy to read display gives a constant indication of the charging performance of both batteries whilst you are driving. If 4 green LED's are showing then the batteries are receiving an excellent charge. Only 1 or 2 green LED's indicates a charging problem. When stopped| the number of orange LED's showing indicates the remaining storage capacity of each battery. Any changes in performance are easily noticed and give advanced warning of a decling battery or other problem.