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<div>Chris</div><div>A few questions</div><div>Are you drawing from both AC legs from the genny, at max of 2200 watts per leg then the genny should not have an issue but if you upsized the batteries and as stated by Mike the fuel delivery system cant keep up because the inverter charge load is higher, steady and for long duration. Can you load test the genny at 240 and see if the issue happens with out the inverter at all. When we size a propane tank we like to see at least 75 lbs per 3 kw genny depending on air temp, bigger when colder, its all about available BTU.</div><div>Jerry</div><div><br></div><div><br></div><div><br></div><div id="composer_signature"><div style="font-size:85%;color:#575757">Sent from my Verizon Wireless 4G LTE smartphone</div></div><br><br>-------- Original message --------<br>From: Mike Kocsmiersky <mikek@spiritsolar.net> <br>Date: 4/26/2016 12:41 AM (GMT-10:00) <br>To: 'RE-wrenches' <re-wrenches@lists.re-wrenches.org> <br>Subject: Re: [RE-wrenches] Battery charging problems <br><br>Chris,<br>In theory the upgraded batteries should be able to accept a greater current<br>(or at least max charge current) for a greater length of time than the prior<br>battery bank. I once had a propane genset run rough when it was starved for<br>fuel, due to an undersized upright propane cylinder which could not<br>evaporate the liquid propane fast enough for the load of the genset. This<br>caused the regulator on the genset to have awful difficultly, and usually<br>would drop the load because it couldn't stabilize. This doesn't sound like<br>it would be your problem, if it was running properly before, but perhaps the<br>longer duration at higher current is creating difficulty for the LPG to<br>evaporate enough. May be compounded if the fuel tank was recently<br>overfilled and doesn't have as much surface area, or if it is way low and<br>can't maintain pressure. May want to check the tank size of propane for the<br>genset. (I'm assuming this is LPG).<br><br><br><br>Mike Kocsmiersky<br>Principal<br>Phone: 413 883-3144 <br>Spirit Solar<br>www.SpiritSolar.net<br><br><br><br>-----Original Message-----<br>From: Chris Daum [mailto:chris@OasisMontana.com] <br>Sent: Thursday, April 21, 2016 3:41 PM<br>To: 'RE-wrenches'<br>Subject: [RE-wrenches] Battery charging problems<br><br> Dear people: <br><br>I have an off-grid customer who has, in his system, a Magnum MS4448 and 16<br>of the Rolls S550 batteries, a Kohler generator (and Trimetric meter and<br>other components). He upgraded his batteries this past March, and since<br>he's installed his new batteries, the generator is running 'rough'. He's at<br>a great distance from our shop so a local business helps him from time to<br>time. They believe that the "batteries are too powerful for the 8.5 kw<br>generator" and recommended running it at 50 percent charge control. After 3<br>hrs run, it seems to help but will mean more run time for his generator (and<br>hence, use more fuel). Have you ever heard of anything like this?<br>Everything ran fund before the battery upgrade.<br><br>Thanks for your input!<br><br>Best,<br><br>Chris Daum<br>Oasis Montana Inc.<br>406-777-4309<br>406-777-0830 fax<br>www.oasismontana.com<br><br><br><br><br><br>_______________________________________________<br>List sponsored by Redwood Alliance<br><br>List Address: RE-wrenches@lists.re-wrenches.org<br><br>Change listserver email address & settings:<br>http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org<br><br>List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html<br><br>List rules & etiquette:<br>www.re-wrenches.org/etiquette.htm<br><br>Check out or update participant bios:<br>www.members.re-wrenches.org<br><br></body></html>