Dave, Do you have a document that indicates the LG Chem is not warrantied when in off-grid use? I've been looking for this exact document with no luck. Also you stated the 48V is not covered, would that also mean the 400V versions is also not covered?
I have a client that is trying to specify components for an off grid system, because his online research says that those are the products he wants. Never a good sign, but we're used to it here with a lot of retired professors, you just have to take some time to show them your reasons for not doing what they want and they usually come around. With Regards, Daniel Young, NABCEP Certified PV Installation ProfessionalTM: Cert #031508-90 -----Original Message----- From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Angelini Offgrid Solar Sent: Monday, February 19, 2018 2:46 PM To: RE-wrenches <re-wrenches@lists.re-wrenches.org> Subject: Re: [RE-wrenches] Li+ Systems Puerto Rico LG has decided not to allow their 48V batteries to be used for offgrid. The 400V LG and Solar edge is too small to be useful for offgrid in my opinion and no warranty. I would add Discover battery to your LFP list. They communicate by canbus and Xanbus to Schneider XW and CSW gear. It is too bad about LG (or Tesla) as they were light and not too expensive Lithium type NMC chemistry. The other LFP Chemistry is much heavier and around $1,000 a usable KWH, or 4 times flooded LA. A hard sell at this time. I still am running the LG RESU10 XW power system and I attached a screen shot of how nice the Engineers at Schneider did making a simple power display with all the Offgrid data. I left out the Generator display as we do not need one here in the California Sierras. Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ e-mail offgridso...@sti.net text 209 813 0060 > Greetings Wrenches; > > We are designing several systems for Puerto Rico, and while these will > eventually could be grid tied once the grid returns, they will need to > operate reliably in off grid mode possibly for a year or more. What > is everyone's experiences with the Storedge and LG setup? I've > worked with the regular Solaredge GT system and was quite impressed, > but I've heard the Storedge is not a good off grid option. What are > the issues, and has anyone used the Storedge in longer term outages? > > Right now we are designing some smaller systems that will use Magnum > inverters with 24v and 48 v Li+ batteries from other manufacturers, > like Simpliphi and LiFe Blue. ( No GT, Backup only) These are lower > cost and allow us to use more traditional off grid designs, but also > have limited charge and discharge current. In order to make Li+ cost > effective, we have had to reduce the storage size in half compared to > lead acid. We feel this is justifiable considering Li+'s ability to > be discharged to 100%, its voltage stability, and its higher efficiency. > > All feed back is welcome, as we venture into less well charted > territory. We just don't want to set up systems that are going to > not be functional in 5 to 8 years because of inferior AGM lead acid > batteries. We use HUP batteries for most larger off grid systems, > but these are not feasible because of their size and maintenance requirements. > > Thanks, > > Ray Walters > > Remote Solar > > _______________________________________________ > 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 > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist > .html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ e-mail offgridso...@sti.net text 209 813 0060 _______________________________________________ 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 List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
