I considered a 96-cell panel, but the highest watt panels don't compare to new 72-cell panels coming out in the 400+ watt range. It's a good fallback position because I might be losing more in the conversion than I am gaining in the higher power output.
Jason Szumlanski On Mon, Apr 12, 2021 at 2:23 PM Kent Osterberg <k...@coveoregon.com> wrote: > Jason, > > Would a 96 cell Panasonic module fit in the space you have available? It > would give you sufficient voltage to charge this battery. > > Kent Osterberg > Blue Mountain Solar > > On 4/12/2021 10:40 AM, Jason Szumlanski 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/ee57a11416ed71e7b728797aa2b97ece3a5f03ca?url=http%3A%2F%2Flists.re-wrenches.org%2Foptions.cgi%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=0a99a5fa00c5e50e> > > 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/9118698e34417bda3b2a7a0c71028e5988fff6f7?url=https%3A%2F%2Fwww.mail-archive.com%2Fre-wrenches%40lists.re-wrenches.org%2F&userId=1613865&signature=37458f340e0ff03a>http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > <https://mailtrack.io/trace/link/c4673ac9bd8ea50844c2357e03a050d586498f3e?url=http%3A%2F%2Flists.re-wrenches.org%2Fpipermail%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=6aecce0afef0aa74> > > List rules & etiquette:http://www.re-wrenches.org/etiquette.htm > <https://mailtrack.io/trace/link/11c0e7c7b2dae65772dc303c08f0a2c617b76dc2?url=http%3A%2F%2Fwww.re-wrenches.org%2Fetiquette.htm&userId=1613865&signature=b8e56d63388a8e61> > > Check out or update participant bios:http://www.members.re-wrenches.org > <https://mailtrack.io/trace/link/4a17b3355c6fb1198d464e14902e76e42dca3142?url=http%3A%2F%2Fwww.members.re-wrenches.org&userId=1613865&signature=583520a3d733c417> > > > _______________________________________________ > 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/7a17b47a6ba1a036493e686171fe727c36be4dff?url=http%3A%2F%2Flists.re-wrenches.org%2Foptions.cgi%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=219d48c9d6b9dc65> > > 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/1260c603ea6c23f677c5e2be06cb14a80391a36a?url=https%3A%2F%2Fwww.mail-archive.com%2Fre-wrenches%40lists.re-wrenches.org%2F&userId=1613865&signature=e21a6fd1f3ed4005> > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > <https://mailtrack.io/trace/link/faccc39db7ab2df6792660d963f44fa88519c3de?url=http%3A%2F%2Flists.re-wrenches.org%2Fpipermail%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=191537b1b4819891> > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > <https://mailtrack.io/trace/link/4a0d10ed0315233c46833783256309caa77970a3?url=http%3A%2F%2Fwww.re-wrenches.org%2Fetiquette.htm&userId=1613865&signature=3be9a9dff725ed98> > > Check out or update participant bios: > http://www.members.re-wrenches.org > <https://mailtrack.io/trace/link/bd0147fba8ebfd2ffd31ecdcba1d612324cf525a?url=http%3A%2F%2Fwww.members.re-wrenches.org&userId=1613865&signature=9d70d5812107ab50> > >
_______________________________________________ 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 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/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
