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]] *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 <http://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 <http://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 <http://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>
> <http://www.unwiredltd.com/>
> >> Desk: 510-868-1614 x100
> >> Mobile: 510-207-0000
> >> [email protected]
<mailto:[email protected]>
> >>
> >>
>
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> >>
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