CONCEPT VAN IN STORAGE

Hi David, I own a 2018 Concept Innovation caravan which is fitted with a Battery Plus 35SR BMS MPPT/ BMPro trek charger/controller, a 100Ah battery and a 150W solar panel on the roof. Up until now the solar panel has kept the battery fully charged when stored at home, but I’ve recently had a carport built to store the van under and, of course, the solar panel isn’t getting enough light to work. I’ve found the battery runs flat after about four weeks even though the only thing drawing power is the