Need a bit of help anyone please, my leisure battery was flat after leaving it on storage over the last 3 months, the solar panel didnt seem to charge the battery, so took it home and charged it for 2 days, put it back on my motorhome and and thing are working, but the controler has only 1green light not 2, think battery 1 is leisure and battery 2 is the engine battery as the foto shows, so not sure what's going on with it,