Wrenches, please correct me if I am off-base here; The way I am reading the SMA product info literature is that the BAT relay cnx is for the new up-and-coming 2kW SMA Lithium battery intended for grid-tie load shaving or short-period battery backup (just like the new ones from enphase, tesla, etc) somehow in combination with the SMA daytime Secure Power Supply, and that the BAT cnx can also be used for true off-grid operation with a Sunny Island inverter added in the basement next to the battery bank.
This all reminds me of the never-ending TV ads for ED meds..."Ask your PV professional if your system is healthy enough for battery backup. If you experience a grid outage lasting longer than 4 hours, contact your PV professional immediately." Except the doctors get their CEUs for free to learn how to diagnose and prescribe those meds, we have to pay all travel, lodging and workshop expenses to learn how to responsibly sell, install and retrofit PV systems for grid tie battery backup. Questions about these retrofits are taking up an ever increasing portion of my allotted "free consulting" time for potential customers. I wish somebody offered a NABCEP accredited master class about it with all the gory details. Dan Fink Adjunct Professor, Ecotech Institute IREC Certified Instructor™ for: ~ PV Installation Professional ~ Small Wind Installer Executive Director, Buckville Energy NABCEP Accredited Continuing Education Providers™ 970.672.4342 On Wed, Feb 17, 2016 at 7:14 PM, jay <jay.pe...@gmail.com> wrote: > HI Marco, > > that might indeed be true. > > But there are many references to batteries, battery relay control for > battery charging, > > pages below all reference to different battery parameters > http://files.sma.de/dl/27676/SB5.0-6.0-1SP-US-40-IA-xx-10.pdf > 27 > 36 > 37 > 39 > > Curious. > > jay > > > > On Feb 17, 2016, at 3:02 PM, Marco Mangelsdorf <ma...@pvthawaii.com> > wrote: > > > > Hi Jay, > > > > If you're referring to the new SMA 5 and 6 kW -40 inverters, they are > not battery compatible to my knowledge. > > > > marco > > > > HI All, > > > > I was reading the manual for this new inverter and there are many > references to batteries. > > No one I’ve asked knows anything about this aspect of the inverter. > > > > So I’m posing it here. > > Does anyone know about the battery aspect of this inverter? > > > > thanks > > > > jay > > > > peltz power > >
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