I just left the temp sensor dangling in mid air. This way the Sunny Island at least could react to ambient temperature.
William Miller Miller Solar.com 805-438-5600 www.millersolar.com On Tue, Nov 25, 2025 at 6:10 PM Jerry Shafer <[email protected]> wrote: > William, Wrenches, > I have done several over the past couple years, the only issue I had, I > needed to build a resister that mimiced the BTSas 75 degrees, because the > SI.s will brop and raise max voltage according to the temp, this must be > changed to prevent this as the battery BMS will or at least should do that > anyway. Now I dont know about your batteries and I would suggest that you > look at the battery cables sizes, I looked at a system that had these so > called hight output batteries with # 8 plug in cables, worked very poorly > just a FYI > Fun times > > On Tue, Nov 25, 2025 at 9:42 AM William Miller via RE-wrenches < > [email protected]> wrote: > >> Jim: >> >> I haven’t tried lithium batteries with a traditional charge controller >> yet. All of the equipment you list was designed for lead acid. The >> narrower voltage range of the lithium may confuse the charge controller. >> Same with the AGS triggering. >> >> I know if you call SMA for tech support they may hang up on you when you >> tell them there are lithium batteries. >> >> It may work right away or you may spend a lot of time making it kind of >> work. I hope you can make the client understand this is an experiment. Tech >> support from the battery manufacturer may not be great being a Chinese >> company. >> >> These days I pair lithium only with inverters designed for them. >> >> Good luck. >> >> William Miller >> Miller Solar.com >> 805-438-5600 >> www.millersolar.com >> >> >> On Tue, Nov 25, 2025 at 7:33 AM Jim Gowdy via RE-wrenches < >> [email protected]> wrote: >> >>> Hello All, >>> I have a client that just got some lithium batteries and they have >>> a sunny island inverter with a Midnight Charge controller. I've heard and >>> experienced integrating Lithium batteries into a Sunny Island inverter is >>> challenging and could create problems. Has anyone had experience with >>> these batteries or installing lithium batteries with these components? >>> Below are some details about the system so far..... >>> >>> System: >>> 48v >>> >>> NEW BATTERY: >>> China Aviation Lithium Battery CO. >>> model: CA180F >>> nominal voltage: 3.2v >>> rated capacity: 180Ah >>> rated energy: 576Wh >>> >>> Inverter: >>> Sunny Island >>> model: SI 4548-US-10 >>> >>> CHARGE CONTROLLER: >>> Midnight Solar Classic 150 >>> >>> SOLAR ARRAY: >>> N/A....it was dark when I was at the site so I couldn't take any notes >>> >>> >>> >>> -- >>> Jim with Gowdy Electric >>> Cambria, Ca 93428 >>> business 805 927 2630 >>> cell 805 975 5279 >>> _______________________________________________ >>> 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. When one doesn't work, try >>> the other: >>> https://www.mail-archive.com/[email protected]/ >>> 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 >>> >>> _______________________________________________ >> 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. When one doesn't work, try the >> other: >> https://www.mail-archive.com/[email protected]/ >> 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 >> >>
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