60% DOD is pretty conservative. Do you lose power a lot? Losing power
at this site is somewhat of a hypothetical event. A Mack truck on the
highway wiped out 5 poles and we ran on propane for a whole day. The
previous outage was years before, and I don't expect another one for a
few more years.
...and ideally I'm only on battery for a minute or two while the genny
gets started.
This was my thinking as well.. With my AGM setups I’m not comfortable
pushing beyond 60% DOD.. I’m also paying a lot for 10-year rated large
Ah AGM batteries these days.
*Peter Kranz
*www.UnwiredLtd.com <http://www.unwiredltd.com/>
Desk: 510-868-1614 x100
Mobile: 510-207-0000
pkr...@unwiredltd.com <mailto:pkr...@unwiredltd.com>
*From:*Af [mailto:af-boun...@afmug.com] *On Behalf Of *Mathew Howard
*Sent:* Monday, October 31, 2016 2:33 PM
*To:* af <af@afmug.com>
*Subject:* Re: [AFMUG] Tesla powerwall 2
Figuring those prices, you're not going to end up too far off from the
price of the Tesla for the same run time. Tripling the batteries will
put you up to somewhere around $4500, for basically the same kWh, but
if you factor in being able to 100% discharge the Tesla setup, you're
going to need to add a bunch more battery.
I wonder how the life expectancy compares...
On Mon, Oct 31, 2016 at 2:51 PM, Adam Moffett <dmmoff...@gmail.com
<mailto:dmmoff...@gmail.com>> wrote:
That's the same link I sent earlier, bro.
$3049 is list price....you'll pay closer to $2500 - $2600.
On 10/31/2016 3:47 PM, Chuck McCown wrote:
This looks like it:
http://www.aimscorp.net/12000-Watt-Inverter-Charger-48-volt-120-240vac.html
�
$3409/12000=28.4 cents per watt.�
Not too bad considering there is a battery charger in there.
�
*From:*Adam Moffett
*Sent:*Monday, October 31, 2016 1:01 PM
*To:*af@afmug.com <mailto:af@afmug.com>
*Subject:*Re: [AFMUG] Tesla powerwall 2
�
http://www.aimscorp.net/12000-Watt-Inverter-Charger-48-volt-120-240vac.html
This has a street price of $2500.� The four SLA batteries
were (I think) $160 each.� The 3/0 battery cable was not
free, but I don't remember what it cost.� This is only 4800
Wh, but it's trivial to add more/bigger batteries.�
This doesn't have any built in network monitoring
though.....does the Powerwall?
�
On 10/31/2016 2:14 PM, Peter Kranz wrote:
The new tesla powerwall 2 appears to be an interesting UPS
option now that it has a build in inverter/charger. 14kWh
for $5500, so would run most of my sites for about 24
hours. When I backed out the costs for 14kWh of our
standard AGM cells and inverter, I think this price is
quite reasonable.
�
https://www.tesla.com/powerwall
�
*Peter Kranz
*www.UnwiredLtd.com <http://www.unwiredltd.com/>
Desk: 510-868-1614 x100 <tel:510-868-1614%20x100>
Mobile: 510-207-0000 <tel:510-207-0000>
pkr...@unwiredltd.com <mailto:pkr...@unwiredltd.com>
�
