all of the batteries batteryhookup.com and bigbattery.com are _used_ or new old stock, nothing new.
On Thu, Feb 13, 2020 at 1:02 PM TJ Trout <[email protected]> wrote: > you get what you pay for, all of these guys guarantee the models to > discharge to the specs they provide or money back > > On Thu, Feb 13, 2020 at 11:17 AM Robert <[email protected]> wrote: > >> You should be aware, that bigbattery.com is selling _used_ batteries. >> For example the 24v "powerwall" 3KWh unit for $699 is a used unit per Will >> Prowse. His testing showed 67% degradation from new. What the cycle life >> of a 67% depleted battery array is unknown.. >> >> On 2/13/20 10:54 AM, [email protected] wrote: >> >> Hoboy does she have some nice batteries... >> >> *From:* Brian Webster >> *Sent:* Thursday, February 13, 2020 11:49 AM >> *To:* 'AnimalFarm Microwave Users Group' >> *Subject:* Re: [AFMUG] Alibaba LiFePO4 48V 200Ah battery packs? >> >> >> Same here…… >> >> >> >> Thank you, >> >> Brian Webster >> >> www.wirelessmapping.com >> >> >> >> *From:* AF [mailto:[email protected] <[email protected]>] *On >> Behalf Of *Mathew Howard >> *Sent:* Thursday, February 13, 2020 12:41 PM >> *To:* AnimalFarm Microwave Users Group >> *Subject:* Re: [AFMUG] Alibaba LiFePO4 48V 200Ah battery packs? >> >> >> >> I'm afraid to click on that link... >> >> >> >> On Thu, Feb 13, 2020 at 10:50 AM TJ Trout <[email protected]> wrote: >> >> Also bigbattery.com is another good source >> >> >> >> On Thu, Feb 13, 2020, 8:46 AM Steve Jones <[email protected]> >> wrote: >> >> some guy named ron is coming over to charge my batteries now >> >> >> >> On Thu, Feb 13, 2020 at 10:20 AM Brian Webster <[email protected]> >> wrote: >> >> To make sure you get the proper connectors, why else? >> >> >> >> Thank you, >> >> Brian Webster >> >> www.wirelessmapping.com >> >> >> >> *From:* AF [mailto:[email protected]] *On Behalf Of *Chuck McCown >> *Sent:* Thursday, February 13, 2020 10:42 AM >> *To:* AnimalFarm Microwave Users Group >> *Subject:* Re: [AFMUG] Alibaba LiFePO4 48V 200Ah battery packs? >> >> >> >> I wonder why they want to know my gender? >> >> Sent from my iPhone >> >> >> >> On Feb 13, 2020, at 3:22 AM, TJ Trout <[email protected]> wrote: >> >> >> >> Battery hookup.com has the modules, don't buy them all guys. They say >> Daly BMS works good. Make sure you get a bms with low temp and low voltage >> disconnect. >> >> >> >> On Wed, Feb 12, 2020, 6:26 PM <[email protected]> wrote: >> >> Do tell. Where do you get the batts? What BMS are you using? >> >> Do you want to resell? I would volunteer to be logistics and fulfillment >> if you want. >> >> >> >> *From:* TJ Trout >> >> *Sent:* Wednesday, February 12, 2020 7:19 PM >> >> *To:* AnimalFarm Microwave Users Group >> >> *Subject:* Re: [AFMUG] Alibaba LiFePO4 48V 200Ah battery packs? >> >> >> >> Guys, every chemistry of lithium battery (lifepo4, li-ion, lto, etc) are >> available in 1 to 10 KW modules at less than $100 a kilowatt hour most of >> them test between 70 to 99% of the rated capacity mostly removed from >> electric vehicles anyways we repurpose them into storage for our equipment >> you just need a 48 volt BMS to balance the cells and provide low >> temperature and low voltage protection. >> >> >> >> On Wed, Feb 12, 2020, 5:50 PM Robert <[email protected]> wrote: >> >> They have three problems.. 1) Cost.. Yeah they break the bank. 2) low >> voltage compared to other chemistries, which means _more_ cost 3) poor >> efficiency.. You put in 100 watts, you only get 80 watts out. All of >> this is from listening to Will Prowse.. He has an excellent set of tubes >> on them... >> >> https://www.youtube.com/channel/UCoj6RxIAQq8kmJme-5dnN0Q >> >> On 2/12/20 5:33 PM, Steve Jones wrote: >> >> these they say are good for subzero charging, thats what appeals to me >> and that the subzero doesnt affect discharge rate >> >> >> >> >> >> On Wed, Feb 12, 2020 at 6:39 PM Robert Andrews <[email protected]> >> wrote: >> >> Lithiums degrade with temps over 130 degrees F ( depending upon >> chemistry and if you attempt to charge them below freezing. Failure can >> result from trying to charge below freezing. Between those extremes >> they do pretty well. The below freezing is a deal breaker for outside >> solar. There are manufacturers ( BattleBorn + others ) that are coming >> out with heaters to get around that. >> >> On 02/12/2020 04:21 PM, Mathew Howard wrote: >> > I'm wondering how well lithiums hold up compared to flooded cells in a >> > non-environmentally controlled area. I suspect it's worse. >> > >> > On Wed, Feb 12, 2020 at 6:20 PM <[email protected] >> > <mailto:[email protected]>> wrote: >> > >> > In my 42+ years of dealing with stationary flooded cells is that you >> > can >> > easily get 20+ years from them if they are properly maintained and >> > kept in >> > an environmentally controlled area. >> > >> > -----Original Message----- >> > From: Bill Prince >> > Sent: Wednesday, February 12, 2020 5:04 PM >> > To: [email protected] <mailto:[email protected]> >> > Subject: Re: [AFMUG] Alibaba LiFePO4 48V 200Ah battery packs? >> > >> > I think you would expect at least 2-3 times the life with lithium >> > (almost all the various chemistries currently in vogue). You can >> also >> > increase discharge tolerance to 80-90 percent instead of the usual >> > lead-acid 50% (or thereabouts). >> > >> > I think the cost is still a bit over the top. Maybe another year or >> two >> > depending. >> > >> > >> > bp >> > <part15sbs{at}gmail{dot}com> >> > >> > On 2/12/2020 3:47 PM, Ken Hohhof wrote: >> > > Life also matters. >> > > >> > > Half the cost but has to be replaced in half the time would not >> > be a good >> > > deal. With my luck, if batteries die after 3 years, I'll have a >> > big power >> > > outage every 37 months. And it's not just a cost calculation. >> > Lugging >> > > half >> > > a ton of new batteries out to a tower and then hauling the old >> > ones back >> > > for >> > > recycling sucks. So if someone has battery technology that lasts >> > 10 or 20 >> > > years, that's worth a bunch. >> > > >> > > -----Original Message----- >> > > From: AF <[email protected] >> > <mailto:[email protected]>> On Behalf Of [email protected] >> > <mailto:[email protected]> >> > > Sent: Wednesday, February 12, 2020 5:36 PM >> > > To: [email protected] <mailto:[email protected]> >> > > Subject: Re: [AFMUG] Alibaba LiFePO4 48V 200Ah battery packs? >> > > >> > > Charging time doesn't interest me much in a grid backup >> > situation. The >> > > cost >> > > of the battery per watt hour is normally my only consideration >> for a >> > > backup >> > > battery. >> > > >> > > -----Original Message----- >> > > From: Robert Andrews >> > > Sent: Wednesday, February 12, 2020 4:25 PM >> > > To: [email protected] <mailto:[email protected]> >> > > Subject: Re: [AFMUG] Alibaba LiFePO4 48V 200Ah battery packs? >> > > >> > > Nice thing about the lithium Iron is any charger that is >> programmable >> > > will work. And the faster you can charge them the better. You >> > think >> > > flooded times of 2-4 hours and with a big charger the lithium >> > banks can >> > > charge at 100amps and 1 hour. >> > > >> > > On 02/12/2020 02:06 PM, [email protected] <mailto:[email protected]> >> > wrote: >> > >> 21 cents per watt hour. That is not competitive with flooded >> cells. >> > >> And what kind of special charger would you have to have? >> > >> *From:* Peter Kranz via AF >> > >> *Sent:* Tuesday, February 11, 2020 5:36 PM >> > >> *To:* [email protected] <mailto:[email protected]> >> > >> *Cc:* Peter Kranz >> > >> *Subject:* [AFMUG] Alibaba LiFePO4 48V 200Ah battery packs? >> > >> >> > >> Anyone successfully built a telecom UPS solution using rack >> mount >> > >> LiFePO4 batteries sourced from china? >> > >> >> > >> There seems to be endless arrays of rack mount solutions there: >> > >> >> > >> >> > >> https://www.alibaba.com/product-detail/48v-100ah-200ah-lithium-ion-bat >> > >> >> tery_60844575234.html?spm=a2700.details.pronpeci14.6.7e40675elEWkcL >> > >> >> > >> Prices run about 25% the cost of locally sourced LiFePO4 >> solutions. >> > >> The selection is crazy however, and who knows what the gotchas >> are. >> > >> >> > >> *Peter Kranz >> > >> *www.UnwiredLtd.com <http://www.UnwiredLtd.com> >> > <http://www.unwiredltd.com/> >> > >> Desk: 510-868-1614 x100 >> > >> Mobile: 510-207-0000 >> > >> [email protected] <mailto:[email protected]> >> > >> >> > >> >> > >> ---------------------------------------------------------------------- >> > >> -- >> > >> -- >> > >> AF mailing list >> > >> [email protected] <mailto:[email protected]> >> > >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > >> >> > >> >> > > -- >> > > AF mailing list >> > > [email protected] <mailto:[email protected]> >> > > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > > >> > > >> > >> > -- >> > AF mailing list >> > [email protected] <mailto:[email protected]> >> > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > >> > >> > -- >> > AF mailing list >> > [email protected] <mailto:[email protected]> >> > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > >> > >> > >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> >> >> >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> ------------------------------ >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> ------------------------------ >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >
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