It looks like the Boost versions of the Genasun only go up to an 8A input current rating. However, they have a footnote on the spec sheet that reads:
"*Panel ratings have increased since we designed the GVB. Although we don't believe in changing specifications without a corresponding engineering change, based on both our customers' experiences over the years as well as the headroom we designed into the GVB, we feel comfortable recommending the GVB for panels with Imp up to 9A." That won't work for a 420W module with an 11.05A Imp. Very good to know about this product, nonetheless. Thank you! Jason On Mon, Apr 12, 2021 at 2:03 PM Mac Lewis <maclew...@gmail.com> wrote: > There is a company called Genasun that I believe makes a boost solar > charge controller to do this. They are in the marine world and I haven't > poured over their specs but they are worth checking out. > > Try looking at > Genasun GVB-8-Li > Good Luck! > > > On Mon, Apr 12, 2021 at 11:43 AM Jason Szumlanski < > ja...@floridasolardesigngroup.com> wrote: > >> I want to charge a 51.2V LiPO battery with a single 420W 72-cell module. >> Vmp is 40.14V. >> >> It's one of those situations where I just need a lot of battery capacity >> as a backup for a specified time period, but it doesn't matter how long it >> takes to charge it back up. And I have space for exactly one 72-cell module. >> >> It's going to be a Victron inverter. I'm not sure if they make a DC-DC >> solution for this charging scenario or if there is another way to >> accomplish it without too much cost and complexity. I was half-heartedly >> thinking about an AC coupled microinverter, but that has drawbacks in terms >> of efficiency I think. Maybe that's not any worse than DC-DC conversion - >> I'm not sure. AC Coupling would probably be cheaper and easier. Monitoring >> might be difficult/limited. And AC coupling would require that the inverter >> be on (inverting) which isn't ideal for this situation either. >> >> Thanks in advance, >> >> Jason Szumlanski >> Florida Solar Design Group >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> <https://mailtrack.io/trace/link/5671bb2874bd726cc5c1be6466762454d0ac3288?url=http%3A%2F%2Flists.re-wrenches.org%2Foptions.cgi%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=2e94959cba40a21b> >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >> <https://mailtrack.io/trace/link/dcb0adca5c3efcf2c4106e7281e7453c910b2851?url=https%3A%2F%2Fwww.mail-archive.com%2Fre-wrenches%40lists.re-wrenches.org%2F&userId=1613865&signature=bfa10ebad04da799> >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> <https://mailtrack.io/trace/link/041454cca95491c711df0eb841c97a78ae89f367?url=http%3A%2F%2Flists.re-wrenches.org%2Fpipermail%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=ca791cedec92182d> >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> <https://mailtrack.io/trace/link/666aa038d7f7d456d2855c1a215b73575a559687?url=http%3A%2F%2Fwww.re-wrenches.org%2Fetiquette.htm&userId=1613865&signature=99e5f3537bf3c966> >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> <https://mailtrack.io/trace/link/a2d02cf35d6e7d6bb6f6fbabb745b942ed4ed89b?url=http%3A%2F%2Fwww.members.re-wrenches.org&userId=1613865&signature=b0330e98acd3bb7b> >> >> > > -- > > > > Mac Lewis > > *"Yo solo sé que no sé nada." -Sócrates* > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > <https://mailtrack.io/trace/link/d00d493de527b34afa879d2ebb15a0dac045c893?url=http%3A%2F%2Flists.re-wrenches.org%2Foptions.cgi%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=96c4e1a0d5129d51> > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > <https://mailtrack.io/trace/link/ab618e44e96833d0fe9cd4754e3286ded757f1a6?url=https%3A%2F%2Fwww.mail-archive.com%2Fre-wrenches%40lists.re-wrenches.org%2F&userId=1613865&signature=c71fae5cd1f44e23> > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > <https://mailtrack.io/trace/link/3802abb39ea87289fb833d3b5cccc82908522891?url=http%3A%2F%2Flists.re-wrenches.org%2Fpipermail%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=6d49bad731303ace> > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > <https://mailtrack.io/trace/link/1e6629d0006bc0a752765dd58937fa6f2c8dd92d?url=http%3A%2F%2Fwww.re-wrenches.org%2Fetiquette.htm&userId=1613865&signature=6be58cd2c7581324> > > Check out or update participant bios: > http://www.members.re-wrenches.org > <https://mailtrack.io/trace/link/ba98e2df6e067c034f4c2d7dfe4ffec1e840c30e?url=http%3A%2F%2Fwww.members.re-wrenches.org&userId=1613865&signature=040d207e0fc5989f> > >
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