This client originally requested to have three SF180 Solar Power Kits installed, along with a 40A charge controller. After about a month he realized that he didn’t have enough solar power to meet his needs and he came back to upgrade his system. We added three more SF180 Solar Panel Kits, and replaced the 40A charge controller with an 85A Victron charge controller to accommodate the additional solar charging current. We always recommend that our clients have us install a system that is easily expandable to avoid duplicate costs. It is much more cost effective to install a larger system core that allows for expansion than it is to install a smaller system core that has to be completely replaced in order to add additional power.