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]
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]> On Behalf Of [email protected]
Sent: Wednesday, February 12, 2020 5:36 PM
To: [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]
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] 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]
*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/>
Desk: 510-868-1614 x100
Mobile: 510-207-0000
[email protected]
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