Simple and easy to read display gives a constant indication of the charging performance of the battery whilst you are driving. If 4 green LED’s are showing then the battery is 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 the battery.
Any changes in performance are easily noticed and give advanced warning of a decling battery or other problem.
An audible alarm sounds if the battery gets too low.