If you have a resale number that should be fine, at least it has been with me, they ask before ordering, do you need a contact person
On Sun, May 24, 2020, 4:23 PM Dave Angelini Offgrid Solar < offgridso...@sti.net> wrote: > Hi Jerry, > > When I looked at Blue Planet I had to pay the sales tax as none the normal > distributors would carry Blue Planet. Has that changed please? > > *Dave Angelini Offgrid Solar > "we go where powerlines don't" > http://members.sti.net/offgridsolar/ <http://members.sti.net/offgridsolar/> > e-mail offgridso...@sti.net <offgridso...@sti.net> > text 209 813 0060* > > On Sun, 24 May 2020 15:23:50 -0700, Jerry Shafer <jerrysgarag...@gmail.com> > wrote: > > Wrenches > Again not all batteries are the same, Chemistry, recharge rate or > intelligence of the BMS, l have personally tested Blue planet batteries, l > have let them sit at 100% SOC for 10 weeks, ran them at 30% SOC for 6 > months, l have performed 100% to 0% cycling up to 4 times a day. This is > the same tests l ran on a variety of Li tech batteries and BluePlanet is > the only one that survived this testing. It's ore then spec sheets and > cost, it comes down to success or failure, personally l like success and > being able to pass or fail batteries without having my customers pay the > price is a good thing. Blue Planet has 8000 cycles life and a 15 year > warranty at 70% compare that to anything out there but again that's just me. > > On Sun, May 24, 2020, 1:32 PM Darryl Thayer <darylsol...@gmail.com> wrote: > >> I have spoken with a li battery >> researcher. Do not charge over 85% of battery full charge voltage and >> they will last over 25 years. But go above or below bottom and trouble >> >> On Sun, May 24, 2020, 10:27 AM Jay <jay.pe...@gmail.com> wrote: >> >>> One question I have for those more versed than me in lithium is, I'm >>> under the impression that having a lithium battery in float for years isn't >>> good for it. Or at the very least it has to be cycled with some regularity. >>> >>> I'd like to hear data on that >>> >>> Thx >>> Jay >>> >>> Peltz power. >>> >>> >>> >>> >>> >>> On May 23, 2020, at 10:08 PM, Ray <r...@solarray.com> wrote: >>> >>> I suggest starting with a very simple look at the continuous output >>> rating of the battery and match that to the inverter continuous rating. >>> This ends up with quite a bit more battery than you might think at first. >>> However, if the customer paid the big bucks for a battery backup system, >>> they should at least get enough battery to operate the inverter at its >>> rated power. Anything less, I would consider poor design. The same goes >>> for lead acid batteries, they just don't work well, even on grid, when the >>> battery is undersized. Even lead acid batteries have maximum current >>> output ratings that should at least be matched to the inverter rating. >>> >>> If you WERE going to under size the battery, then you should keep it >>> safe by reducing the size of the inverter battery breaker as well. I know >>> this "micro battery for GTB" is becoming a trend, but it doesn't mean its >>> right. >>> >>> Ray Walters >>> Remote Solar >>> 303 505-8760 >>> >>> On 5/23/20 5:48 PM, Mick Abraham wrote: >>> >>> Greetings, All~ Mark Frye had asked: "...with a 4000w Outback Radian, >>> AC coupled with 2000w of PV, what is the smallest Li battery I would want >>> for stable operation?" >>> >>> Mick's reply: In the lithium arena, one often finds the ratings in >>> kilowatt-hours rather than in amp-hours. This is an easy conversion for us >>> energy nerds to make, so below I'm mainly using watts & watt-hours with >>> occasional conversions to amp-hours. >>> >>> I suggest that you start with the spec sheet (of whichever brand lithium >>> battery is on your radar), & see what the manufacturer says about >>> "allowable rate of recharge". You may find that C/2 is an acceptable rate >>> with several manufacturers, Mark--much faster than what we're accustomed to >>> with typical lead-acid batteries. Let's assume: >>> >>> * ...that your AC coupled PV array crests around 1800 watts to the >>> battery when there are no loads >>> * ...that the battery is below 100% state of charge, and >>> * ...that the solar conditions are optimal. >>> >>> Let's further assume that those conditions represent your battery's >>> highest energy rate in either direction. >>> >>> 1800w X two hours = 3,600 watt-hours dividing by 48v nominal = 75 >>> amp-hours in the above hypothetical situation. >>> >>> ++++++++++++++++++++++++++++++ >>> >>> The rate at which a battery can receive energy is (usually) also the >>> rate at which it can comfortably deplete, so let's briefly look at the flip >>> side: Assuming the battery mfr. wants the watt-hours to be no less than two >>> times the maximum wattage, a 3600 watt-hour (C/2) battery should not be >>> depleted faster than 1800 watts. Your 4kW Radian, Mark, could exceed that >>> if the loads demand it--& maybe your loads don't. Motor starting surges >>> should probably be part of the thinking & it wouldn't hurt to ask the >>> mfr.'s opinion about short term surges which briefly deplete the battery >>> faster than the hypothetical two hour rate. >>> >>> By approaching this question based on the battery manufacturer do's & >>> don'ts, one improves the chance of getting warranty coverage should it >>> later be needed. "What the large print giveth, the fine print taketh away." >>> >>> The Wrench List is the Bomb! >>> >>> Mick Abraham, Proprietor >>> www.abrahamsolar.com >>> >>> Landline: 970-731-4675 >>> Cell phone or for text messaging: 970-946-6584 >>> ᐧ >>> >>> _______________________________________________ >>> 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 >>> >>> _______________________________________________ >>> 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 >>> >>> _______________________________________________ >>> 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 >>> >> _______________________________________________ >> 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 >> > _______________________________________________ > 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 > >
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