Compadres,I have 4 identical arrays of 3 strings of 3 Solarworld SW 245 mono (2010 model) to FM80s. When designing, not exceeding 150 voc was critical. No record temp data available. Location ~ 4,000' Pacific Northwest. Recently replaced an FM80 with 6 blown FETs showing max power at 3075 watts! Th
Well, Jerry, I guess I'm up to speed now, thanks... It's just that your
explanation here wasn't what I asked about. I was asking about your
words that "rotating them reduces the effect [of internal resistance to
charge and even discharge] and may in time help to improve the battery
life" - I ha
> - I am researching if we could integrate the EZ-foot with the Snap-N-Rack,
>
William,
For metal roof scenarios where rafter finding isn't an option we use EZ
Feet and then attach SnapNrack rails to them. It's a very good solution
just be sure to note how much of the vertical portion of the EZ F
Dan,
I have been living on Ni-Fe batteries for several years now and I have somewhat
mixed feelings. I love them but I also dislike some aspects of them. First of
all, as everyone mentions, they have a very low round-trip Wh efficiency, and
secondly, they do use a lot of water. Otherwise, they
Friends:
I have a roof-top PV project coming up where we will need to mount some of
our feet without benefit of screwing into rafters.
This project is an addition to a previous project, and in that iteration we
used DPW EZ-feet. We no longer use DPW products, instead we are a
Snap-n-Rack hou
As we are talking about the IronEdison batteries.
I checked their site about lithium and they claim to have a BMS that will
communicate with Outback.
I didn’t think anybody had comm with OB?
Can anyone confirm that?
jay
Peltz power
> On Nov 21, 2018, at 11:36 AM, Ken Schaal wrote:
>
> Hey ale
HI Ray,
I’ll add that they use lots of water requiring lots of maintenance.
Their efficiency is between 70 and 80%.
The reason that the railroad and telecomm have used them in remote applications
is that chemistry doesn’t care about cold or hot.
And given that they cost (95%) almost as much as
IE has been good with their LFP and Schneider spread sheet data for easy
system config. I can't see Nife anymore. Gobble
Dave Angelini Offgrid
Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
[1]
e-mail offgridso...@sti.net [2]
text 209 813 0060
On Wed, 21 Nov 2018
10:5
WrenchesI have used Iron Edison Batteries and 12 volts is tough but l have had
no issues at 48, you can set the high side voltage enough to work well. They
are a very thirsty battery technology but may last for ever. Round trip
efficiency is 70% at best so a larger array is required and the batt
AllanI have been involved in off grid since the late 70's, l guess l have
picked up a thing or two. As batteries age most will require higher voltage to
reach the same specific gravity and will have a lower voltage under a load.
This is the result of resistance with in the battery. This battery
I concur with the other writers. They have low charge efficiency, Although
that is not a killer. the voltages are as David says, but the discharge
drops below 1.2 volts with surges. I have heard of a battery fire with one
set, perhaps it was due to low water as David suggest. They seem to need a
Allan S. sent follow up queries after my response to Drake's dilemma.
Allan's queries are pasted below.
Mick here: Sorry I didn't state my suggestion more clearly but, yes, in
this situation the only way to know if the battery is worth trying to
salvage is to pump it up nicely with a bunch of ener
Jerry,
You write "I'm sure you know this..." but I don't know it. I don't think
I have heard this before, as you have presented it.
How do you rotate strings? Where did you learn this? Is there an online
source that you can provide?
Thanks, Allan
On 11/20/2018 6:21 PM, jerrysgarage01 wrote
Hey alexis.
Any thoughts regarding these comments about Ni-fi batteries?
Ur running them DC direct?
Hope all is well. Ken
On Wed, Nov 21, 2018, 2:25 PM David Katz AEE Solar sold NiFe batteries from Russia in the late 1990s. They last a
> long time but were hard to use with inverters. A 12 volt
AEE Solar sold NiFe batteries from Russia in the late 1990s. They last a
long time but were hard to use with inverters. A 12 volt pack has 10
cells. Each cell reaches full charge at 1.7 volts so the pack would be at
17 volts. that is 68 volts in a 48 volt pack. inverters turn off for
over-voltag
I agree with Allan, I have never done a full load test on a battery
bank. The customers experience usually provides the necessary info. In
this case there is no question the battery bank needs replacing. Here
are the reasons to replace in summary:
1) Battery wiring in parallel/ then seri
Mick,
While I fully agree on the importance of a monitor such as the
TriMetric, I'm confused by some of what you've written below. A TriMet
(or any similar monitor for LA) can measure amp-hours removed and
replaced, but it can't measure & display the battery bank's amp-hour
capacity. Only tak
Charge efficiency is really low, Charging parameters can be hard to get
right, Voltage is not stable under heavy loads, and they are really
expensive to boot. I've never sold them for these reasons, but I have
replaced some sets that customers were unhappy with. They seem to work
OK, only if
Hi Guys, I have a potential customer inquiring about installing a pre packaged Iron Edison system.. I recall hearing strange stories about Ni-Fe batteries but don't recall the specifics. I have done a few searches with mixed results.. And have friends advising I run like a Rabbit.. Thought I'd run
Words of wisdom Hilton. I saw a few of these types of systems during the
wildfires here this summer. It was hard to leave people without power in
the smoke and ruin. The guy who took the job has been blamed for
everything. My quote was complete replacement of everything except the
solar panels.
Da
Hi Drake
I vote for option 3: run like the wind. If you touch it you own it. With that
voltage variation there has to be some deterioration, so the bank will never
run right no matter what you do. Of course if you change anything it will be
your fault that it doesn’t work.
If anything, I’d rec
Regardless of the Amazing Batcap 30 yr claims debunked by Dan, a system
wired in the manner described (5 batteries in parallel, then series
connecting the sets of 5 for 48 v) is just not going to charge and
discharge evenly. Its violated the no more than 4 parallel strings
rule, so I'm surpri
Hello All; I would question the client about the origin of this battery
bank. New, used, how long in storage and in service, etc. If he bought
these new, that's a very expensive battery bank!
Usually when I've run into banks of massively parallel, low amp-hour sealed
lead acid batteries, the origi
23 matches
Mail list logo
