We've just ordered a new Journey Outback DX, we've originally upgraded the package to include a second 160ah solar panel giving a total of 320ah and a second 100ah gel battery (apparently Ritar brand?) giving a total of 200ah of battery capacity. Looking at the specs of the J35B management unit I can't see how given the charging output of the unit the batteries will ever get fully charged to 100%? I'm far from being any expert but this surely can't be good for the longevity of the batteries?