Todd
I've heard the same arguement, as well as its inverse. The battery choice was
the decision of the system owner. I know they are more sensitive to
charge/discharge abuse but I see the full charge rate last week at 52.xx V,
just like day 1and I trust the Trimetric and the Sunny Islands.
I know many on this list disagree, but this sounds SO typical for sealed
batteries. It is why I never use em... never! If they are 5 years old, you are
probably at the limit of their life. Replace em with flooded lead calciums and
your customers (and you) will be happy for 20+ years.
my .o2
HI Todd,
I agree that the issue is probably dead batteries.
In regard to the calciums, what is the added cost per life. ie if they cost
3x as much and last 4 x as long when you calc in MX, venting etc, costs might
be pretty close?
thanks,
jay
peltz power
On Oct 4, 2010, at 12:22 AM,
Todd,
Can you give us a comparison of lead vs lead cadmium?
My understanding is that lead cadmium are suited for standby operations such
as telecomm back up. That means spending most of the time in float, with
occasional short term high discharge rate with very high DOD available.
How well
Mark,
It's probably just a brain fart, but it's lead-calcium
Bill
Feather River Solar Electric
4291 Nelson St.
Taylorsville, CA 95983
530-284-7849/6544 fax
- Original Message -
From: Mark Frye
To: 'RE-wrenches'
Sent: Monday, October 04, 2010 8:11 AM
Subject:
Wrenches;
I have quite a bit of experience with flooded lead-calcium vs.
traditional flooded lead-antimony battery banks in remote, off-grid
locations, over the course of the last 15 years. As always, your mileage
may vary.
On the positive side, lead calcium cells have a low self-discharge
Ryan,
Yes, there are twice the number of ungrounded conductors, so twice as many
fuses and switches are required. I haven't seen much in the way of combiners
for ungrounded systems... A combiner for an ungrounded system has two fused
ungrounded sections instead of the typical combiner of today
Thanks Bill,
I am learning more every second.
:-)
Mark Frye
Berkeley Solar Electric Systems
303 Redbud Way
Nevada City, CA 95959
(530) 401-8024
http://www.berkeleysolar.com/ www.berkeleysolar.com
_
From: re-wrenches-boun...@lists.re-wrenches.org
The battery choice was the decision of the system owner.
Since when does the customer make these decisions?
Todd
On Monday, October 4, 2010 6:36am, North Texas Renewable Energy Inc
nt...@1scom.net said:
Todd
I've heard the same arguement, as well as its inverse. The battery choice was
Perhaps James @ Surrette can chime in about the cost difference. I do not think
flooded lead calciums are much more expensive then flooded lead antimony
batteries.
Todd
On Monday, October 4, 2010 8:00am, jay peltz j...@asis.com said:
HI Todd,
I agree that the issue is probably dead
Lead cadmium or lead calcium? Again, I do not have the cycle chart handy, but
hopefully James can post that.
Todd
On Monday, October 4, 2010 8:11am, Mark Frye ma...@berkeleysolar.com said:
Todd,
Can you give us a comparison of lead vs lead cadmium?
My understanding is that lead cadmium
Wrenches,
In the name of public safety, please advise any of your DIY customers that
numerous DIY publications related to electrical wiring have been recalled
due to faulty instructions which could lead to shock or fire.
This is the second of two such recalls this year. Total number of books
Hi All
Less than 10% increase in cost over antimony.
James Surrette
ja...@surrette.com
T: 902-597-4027
M:902-669-1927
Surrette Battery Company Limited
1 Station Road, PO Box 2020,
Springhill, NS,
B0M 1X0
Canada
* Sent from my BlackBerry Wireless Handheld.*
-Original Message-
Since when does the customer make these decisions?
since they started writing the checks. Communicate the options, answer the
questions honestly and openly, give your opinions and recommendations then let
them decide what kind of system they want to own.
Holt E. Kelly
Holtek Fireplace Solar
Hi there,
I notice Mastervolt have a new range of Li Ion batteries, I know of a 3000Ah
24V bank going into a super yacht.
Is this not a battery technology worthy of consideration as well?
Each cell block has built in electronic regulation for individual cells.
They boast of high
When I do a system, the customer is hiring me as the expert. If they want me to
do something that won't work well, my reputation is on the line, and so they
need to hire someone else.
Todd
On Monday, October 4, 2010 2:46pm, hol...@sbcglobal.net said:
Since when does the customer make these
I remember a few years back. a customer insisted on a particular arrangment, I
said that it was a mistake, it would not work, I did it his way, it did not
work, He sued saying I was the expert and I should not have done it that way.
in spite of his insistance. I lost. the settlement was not
Hi Daryl,
Just out of curiosity did you put this into writing and in the contract and you
still lost?
thanks,
jay
peltz power
On Oct 4, 2010, at 4:58 PM, Darryl Thayer wrote:
I remember a few years back. a customer insisted on a particular arrangment,
I said that it was a mistake, it
Hey Carl,
Li ion batteries are awesome and will be used extensively in the first
generation of electric cars (supposedly) coming to a showroom near you.
However, a pack like the one you've described will only be affordable to those
with the ability to buy a super yacht, not 98 % of
The only way to do a capacity test is with a load bank over the rated discharge
period of the batteries, it they have a 6 hour rate, use that one. The 20 hour
rate takes too long! Voltage is a moving target and pretty much useless unless
the battery has been sitting with no charge or discharge
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