I am pushing for 48v. The main concern with doing so are how to best continue to provide 24v power to the 23v circuits. Now I am thinking rather than using a dc stepdown converter, I could potentially use 24v batteries in series/parallel and power the loads directly off of the battery. Not sure how this would throw off the electrical balance of the battery. Thanks all. I appreciate help and direction with this. Looks like there are a few options for me to consider.
Aaron Mandelkorn President / Founder Renewable Energy Outfitters www.reosolar.com Off Grid Depot www.offgridnow.com 970-596-3744 On Thu, Jan 27, 2022, 11:49 AM frenergy <frene...@psln.com> wrote: > Aaron, > > Ain't nothing wrong with going to 48 volt. It sort of sounded > like you wanted to stick with 24 volt but if they want to replace PVs too > (which it sounded like in your original post), go 48. > > Bill > > Feather River Solar Electric > Bill Battagin, Owner > 4291 Nelson St. > Taylorsville, CA 95983 > 530.284.7849 > CA Lic 874049 > > On 1/27/2022 9:09 AM, Aaron Mandelkorn wrote: > > All, I will do a load analysis for the 24v loads. I am looking to get > around 800ah of LI storage at 24v. I typically use the larger 48v > batteries from fortress. The space constraints will not allow for a wall > full of small 50ah 24v units. I am not finding much selection of 24v 200ah+ > options. Is sounds like most of the advice I am getting is towards not > upgrading to 48v. > > Aaron Mandelkorn > President / Founder > Renewable Energy Outfitters > www.reosolar.com > Off Grid Depot > www.offgridnow.com > 970-596-3744 > > On Wed, Jan 26, 2022, 7:59 PM frenergy <frene...@psln.com> wrote: > >> Aaron, >> >> It would be helpful to know how many amps are required to >> power the 24 volt loads and should we assume the batteries are toast or >> nearly so? The brand of inverter? >> >> As Jeff said there are 24V L-ion choices. >> >> Bill >> >> Feather River Solar Electric >> Bill Battagin, Owner >> 4291 Nelson St. >> Taylorsville, CA 95983 >> 530.284.7849 >> CA Lic 874049 >> >> On 1/26/2022 4:16 PM, Aaron Mandelkorn wrote: >> >> Wrenches, >> >> I have a customer with a very old 24v off grid pv system. He wants to >> upgrade his array, inverter and battery bank. There are no options for >> inverter/chargers over 4000 watts in 24v dc. The same goes for lithium >> iron batteries. Everything (of higher wattage and battery capacity) seems >> to be in 48v only now. If going to 48 volts how do I acomodate the few but >> important 24v DC loads in the home. Is a 48v to 24v step down converter >> the best option? What do you think? Any help would be appreciated. Thank >> you. >> >> Aaron Mandelkorn >> President / Founder >> Renewable Energy Outfitters >> www.reosolar.com >> Off Grid Depot >> www.offgridnow.com >> 970-596-3744 >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> 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. 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