Hi Jason, I think a few people have mentioned it here, but the Genasun controller will charge a higher voltage battery than the solar output. It's a very basic interface but they work fine. You could add a Victron shunt to give more of a view into what's happening.
https://sunforgellc.com/product/gvb-8-wp/ On Sun, Aug 17, 2025 at 7:20 AM Jason Szumlanski via RE-wrenches < [email protected]> wrote: > I'm hoping to have a single panel for simplicity and charge a 48V LFP > battery. The voltage is an issue, however, with the Vmp being too low in > most cases. I know a guy that use this cheap DC-DC booster and he says it > works fine: > > https://a.co/d/2nHKVat > > I would like to use a higher quality booster if something like that exists > from Midnite/Victron or another well known manufacturer. Bluetooth > connectivity would be a plus. > > He used an Aptos 440W biracial. I could use the currently available Aptos > 460W, but I was thinking REC Alpha Pure RX for the higher voltage and > beefed up frame with cross members. > > Then I need to see if I can affix some grab handles to the module frame > without overstressing it. I'm thinking of maybe using some XR10 rails to > beef up the long sides of the frame. I'm thinking some MLPE T-bolts could > go through the existing mounting points. Then I could affix the grab > handles to the side of the rails. > > > Jason Szumlanski > Principal Solar Designer | Florida Solar Design Group > NABCEP Certified Solar Professional (PVIP) > Florida State Certified Solar Contractor CVC56956 > Florida Certified Electrical Contractor EC13013208 > > On Sat, Aug 16, 2025, 11:56 PM John Blittersdorf via RE-wrenches < > [email protected]> wrote: > >> Jason, I have done several . My first one had 3 85 watt panels on >> Unirac rails attached to the same support as the original plastic roof. >> Worked great but the rain leaked through the panel spaces. Then a few years >> ago I replaced the 3 panels with one Solarworld 250. I had to beef up the >> front mounting points on the front hood but otherwise have run it >> continuously for over 13 years with just one battery replacement and never >> charged from the grid since panels were installed. >> Used Genesun 36v charge controller >> >> The next one was a 8 passenger stretched >> Cart. The quick and dirty conversion for this one was two wood strips >> screwed to the fiberglass roof the length of the roof spaced to fit just >> inside the two 325 watt panels. Used a Victron charge controller for this >> 48v cart, 2 panels in series. Both carts have been used at Solarfest >> events and the first one also on >> Our sheep farm year round. I Leave it out all winter and shovel up to >> two feet of snow off it at times. >> >> Go to Solarfest.org. Click on >> Home, then scroll to the bottom and the scrolling photos have the 8 >> passenger cart. That rig ran non-stop for the 3 days and nights hauling >> people & band equipment and >> And never ran out of charge. >> >> Let me know if you want more photos. >> >> John Blittersdorf >> >> >> On Sat, Aug 16, 2025 at 2:32 PM Jason Szumlanski via RE-wrenches < >> [email protected]> wrote: >> >>> Has anyone done a conversion with a solar panel to replace the entire >>> roof of a golf cart? >>> >>> I would love to get some tips on that. I'm surprised a quick search did >>> not bring up a lot of kits. >>> >>> Jason Szumlanski >>> Florida Solar Design Group >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> Pay optional member dues here: http://re-wrenches.org >>> >>> List Address: [email protected] >>> >>> Change listserver email address & settings: >>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>> >>> There are two list archives for searching. 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