These are deep cycle batteries and we used them to 50% discharge for
winters here for 4-5years before replacing... we changed to 6v for the
cell failure rates which are a little better for the Interstates than
the walmarts ( cannot remember who makes them right now ). But deep
cycle batteries are a religious choice... You pray to what ever god
you choose. I have about 50 off grid customers and have seen them go
from cheapest ( and some went for used telcom batteries (v. bad choice
)) to the batteries used in Nuke subs.. ( OMG they were expensive, like
100K for the rack ) and they all failed at some rate. And a failed cell
pretty much determines the performance of the rack. I do want a battery
that can take a bulk charge because the sun comes and goes, and when
it's shining I want to make hay... We are now equipping all our off
grid locations with dual chargers to put more amps into the batteries
during the Dec 1st - Feb 1st period, which is what we design for.
On 10/3/16 12:27 PM, Eric Kuhnke wrote:
I'm extremely suspicious of anything that advertises cranking amps, no
matter what kind of lead acid battery it is or how cheap the price
is... It's not designed for cyclic use, so unless you only cycle to 70%
or less DOD (depth of discharge) you will kill that type of battery in
less than one year.
Any lead acid wet cell or AGM designed for off grid or cyclic use will
have a manufacturer's datasheet rating its Ah storage capacity at 1
hour/2 hour/8 hour/20 hour discharge rates.
Re: the Aquion batteries mentioned above, they're much more expensive
and are HUGE, but they supposedly will have 80% of their storage
capacity and life remaining /after/ 4000 cycles to 50% depth of
discharge. It's the cycle life that separates them from even the best
very expensive SLA AGM batteries.
On Mon, Oct 3, 2016 at 12:20 PM, Robert Andrews <[email protected]
<mailto:[email protected]>> wrote:
Sorry now $87...
https://www.walmart.com/ip/EverStart-Group-Size-29DC-Marine-Battery/20531543
<https://www.walmart.com/ip/EverStart-Group-Size-29DC-Marine-Battery/20531543>
We have gone to 6V cart batteries for our serious off grid stuff
with better cycling results, but these are what we use for on-grid
reserve.
The 6V's we buy are 135 AH and we get fewer cells going bad over 2-3
years... When you have 100 cells at a site, you are going to have
failures... (1.2V cells)... Found it was cheaper replacing 3 cell
batteries than 6 cell batteries...
On 10/03/2016 12:09 PM, SmarterBroadband wrote:
120AH for $83?
What model is that?
-----Original Message-----
From: Af [mailto:[email protected]
<mailto:[email protected]>] On Behalf Of Robert Andrews
Sent: Saturday, October 01, 2016 1:12 PM
To: [email protected] <mailto:[email protected]>
Subject: Re: [AFMUG] Solar costs dropping
I read that as a 83 AH battery for 1.1K whereas a 120 AH deep
cycle from
Walmart is $83... For that price diff you can literally throw away
batteries each year...
On 10/01/2016 11:42 AM, Lewis Bergman wrote:
That seems expensive for the AH. They sound like they
recover better
from deep discharge. The last time I bought 75AH batteries
they were
~$200 each. so for somewhere less than half the money you
get close
to the same AH and they added bonus of destroying the planet.
On Sat, Oct 1, 2016 at 12:57 PM Kurt Fankhauser
<[email protected] <mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>> wrote:
I've been seriously looking at solar for off grid,
biggest problem
was the batteries but then I found these salt water
batteries that
seem to be the solution to all the problems associated
with battery
systems, they have a 24v version for a 2.2Kwh cell that
I was going
to wire up to an APC-XL ups and see what happened....
https://www.altestore.com/store/deep-cycle-batteries/saltwater-batteri
<https://www.altestore.com/store/deep-cycle-batteries/saltwater-batteri>
es/aquion-energy-saltwater-batteries-p40483/?gclid=CjwKEAjwvb2_BRCb_s7
Yo7_ZlHASJABz6L0jfIx1iUFerslueuwJHCmFBqRfykUmLVgmbE3Ho39nZRoCgpXw_wcB#
AQU24S-83
On Sat, Oct 1, 2016 at 1:35 PM, Rory Conaway
<[email protected] <mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>> wrote:
https://electrek.co/2016/09/26/solar-power-cost-down-25-in-five-months
<https://electrek.co/2016/09/26/solar-power-cost-down-25-in-five-months>
-theres-no-reason-why-the-cost-of-solar-will-ever-increase-again/____
__ __
And wait until Peroksvite starts selling…. ____
__ __
Thought you might like that Chuck.____
__ __
*Rory Conaway **• Triad Wireless •**CEO____*
*4226 S. 37^th Street • Phoenix • AZ 85040____*
*602-426-0542 <tel:602-426-0542>____*
*[email protected]
<mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>____*
*www.triadwireless.net
<http://www.triadwireless.net>
<http://www.triadwireless.net/>____*
*__ __*
“The other teams could make trouble for us if they
win.” — Yogi
Berra____
__ __
