I have an O'Day 27' sailboat that is powered with a SolidNav electric motor with 4, 12V 190 Ahr batteries wired in series making 48V. I would like to install solar panels to charge this large array of batteries, but do not have a lot of space for solar panels (maybe only 1 or 2), so I know the charge rate will be low. Please let me know if you have any experience with this sort of marine solar panel installation. Thanks. -Ron