First time I cycled my BYD batteries I got 20% more than rated kWh out of them.
Based on third party Ah reading.
Hugh
Get BlueMail for Android
On 24 Aug 2020, 23:32, at 23:32, jay wrote:
>
>Dear lithium experts
>
>Do lithium LFP or NMC batteries have a break in period ( a cer
Hi All,
Just to wrap this one up I can report that the problem was in the control board
in this instance, and having replaced this board it is now working again.
Thanks for all who helped with advice, especially Jay and Kris.
cheers
Hugh
Hugh Piggott
Scoraig Wind Electric
Dundonnell
Ross
they do seem to need it.
cheers
Hugh
Scoraig
Scotland
> On 9 Mar 2020, at 18:20, Ray wrote:
>
> We had one last year with a bad relay, the customer had been charging a Tesla
> EV through it (pass through from the grid) and smoked the relay. It was
> pretty obvious, the clear rela
it to pieces and try to figure out a hardware failure but
I wonder if anyone has seen this and can give me a clue?
cheers
Hugh
Hugh Piggott
Scoraig Wind Electric
Dundonnell
Ross shire
IV23 2RE, UK
+44 77 1315 7600
h...@scoraigwind.co.uk
www.scoraigwind.co.uk <http://www.scoraigwind.co
I am trying out an insulated box and small heater. It doesn't get very cold
in West Coast scotland so 120W seems useful. Also automatic vents used on
greenhouses, to open up the sealed box.
On Fri 17 May 2019, 18:09 Dave Angelini Offgrid Solar,
wrote:
> The risk may be worth it if the battery
to feel any shortage of solar energy. Days are
long. Charge current is low.
As I said it’s a very interesting thread on which I often feel like a lone
heretic.
cheers
Hugh
> On 13 Sep 2018, at 02:55, Sindelar Solar <mailto:al...@sindelarsolar.com>> wrote:
>
> Bill and all,
I have used a load resistor on a voltage controlled relay VCS from solar
converters and a USB data logger. I only used the relay because I didn't want
to kill the battery or sit watching. USB voltage loggers are good things to own
anyway.
Hugh
On 6 August 2017 17:18:51 BST, Steve Higgins <
a fix to it using
“genman mode”.
I just wonder if you have witnessed the process and checked whether the
generator’s own built-in cool down period could be the cause.
cheers
Hugh
> On 30 Dec 2016, at 00:43, Lou Russo <l...@spreesolarsystems.com> wrote:
>
> Thanks to al
for a neutral, but where a number of
diverse circuits are connected there will be some imbalance, so you need a wire
there, but it need not be as heavy as the 3 “hot" ones.
cheers
Hugh
Hugh Piggott
Scoraig Wind Electric
Dundonnell
Ross shire
IV23 2RE, UK
+44 77 1315 7600
h...@scoraigwind.
is the last resort for us.
Hugh
On 4 Dec 2014, at 01:14, Dave wrote:
I'm looking at Bosch # 16083 ($ 765) dishwasher - any problems running this
on OutBack inverter power?
and also a Samsung, or LG, front load clothes washer. I'm a little gun shy
with these fancy machines because of all
for peak usage and
the fact that there is another house connected.
good times! My favorite thing (almost) about renewable energy is the fact that
sometimes there is way too much of it.
Hugh
On 7 Dec 2014, at 16:43, frenergy wrote:
Hugh,
We've done a similar scenario around here
this for sure.
I would check the potential of the aux negative but I don't have any such
controllers here on scoraig and I want to know the score before I go on site to
install the SSR.
thanks to all
Hugh
On 6 Dec 2014, at 00:09, jay peltz wrote:
Hi Hugh
I use 3-32vdc SS relays all the time
hi wrenches,
I am installing some load controls for a client who has a FM80 controller. I
don't have experience with this product. It has a 12V aux output that I wish to
drive an SSR but the wiring is complicated by the fact that this SSR also needs
a power supply as well as a control signal.
Hi Hugh again
Just to clarify the set up:
The SSR controls the AC power from the inverter to the heating load. It
switches partway through each half cycle and thus controls the power to the
load.
The input to the SSR requires a power supply 8-32 V present all the time it is
working. I suppose
defined?
What other factors are applicable such as status (homeowner, installer,
paid/unpaid) and location (inside home, wet location, etc)?
Thanks for any observations.
Hugh
On 5 Mar 2014, at 08:34, Hugh Piggott wrote:
hi All,
I am trying to find some general statements that can be made
factors, one of
which is whether it is separated (floating and well insulated) or not.
Many of us work with battery systems, and not everyone is a certified
electrician. I'd love to know some ground rules.
thanks!
Hugh
Hugh Piggott
Scoraig Wind Electric
Dundonnell
Ross shire
IV23 2RE, UK
I have installed a lot of BP 380 and BP 485 panels that I think have the same
frames. But it's all on a what you can find basis now since they have given up
on the retail market, I am told.
cheers
Hugh (with a nice array of 275s still doing good work on my old house)
On 13 Apr 2012, at 23:17
Interesting thread!
We are having some success with a Kestrel turbine here on Scoraig
I second the idea that Ampair offer a modest but very robust range of products
for high wind sites.
cheers
Hugh Piggott
On 3 Apr 2012, at 20:36, Richard L Ratico wrote:
Does anyone have any experience
strings that
are connected each to its own regulated supply. If a tiny difference in
voltage matters (which I doubt) then you will have the same issues with a
single string.
What am I missing?
thanks
Hugh
___
List sponsored by Home Power magazine
List
at float voltage.
all the best,
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re
the subject here. http://scoraigwind.co.uk/?page_id=637
Best wishes,
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options settings:
http://lists.re
, ask them to check each battery with this
meter? That would identify or rule out the intermittent internal
resistance theory. If it exists, it's just in one battery.
Presumably.
Hugh
Larry, the customer has been fully charging and equalizing every
week to two weeks for several years
before Dairy Queen will be selling
inverters with a large shake.
Jeffrey Yago, pres.
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options settings
and it takes 4 times
longer for everything to go pear shaped.
Another option I've been reading up on is a Battery Equalizer/Battery
Balancer.
This seems like a valid solution, yes.
best wishes,
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk
enough surplus energy
availability (which is usually the key thing for battery health).
Just a thought.
The snag is the cost. ho hum.
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE
% efficient and probably ending in tears.
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options settings:
http://lists.re-wrenches.org/options.cgi/re
I've got a copy of the 'Handbook of Homemade Power' 1974 by the staff
of mother earth news. But you can't have it,
nah.
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE-wrenches
of variable renewable inputs and limited,
expensive electricity availability. Loads that turns off at low Hz
and others that turn on with high Hz could be very good for the grid.
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk
___
List sponsored by Home
.
To me the issues of unbalanced charging are much worse for batteries
in series than they are for batteries in parallel. Now I will go and
hide from the wrath of the list :-)
have fun,
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk___
List sponsored
.
I will read the document that you reference (about thermal runaway)
carefully. I am sorry if I seem a slow learner. This list is an
invaluable resource for the industry. I like to ask naive questions
and I get a deeper understanding as a result. Thanks to all.
--
Hugh Piggott
Scoraig
http
Hi Bill,
Hugh, .25 x C20 would be a C80 rate
Sorry I did not mean that, and I do not think that is what the
manufacturers instructions mean either. They mean 0.25 times the C20
capacity. That is closer to the C4 rate! (And they say 'up to 0.35
x capacity' ).
All controllers that I've
At 13:10 -0700 28/4/11, Starlight Solar, Larry Crutcher wrote:
Hugh,
One last point about the Solar Boost IPN product: Once you have
programmed the 2512iX charge controller from the IPN Pro, the
controller retains the information and can be installed as a
stand-alone unit. That means you can
!
Hugh
At 18:41 -0300 25/4/11, James Surrette wrote:
Content-Type: text/html; charset=US-ASCII
Content-Description: HTML
Hi Hugh,
Here is the charging information for our AGMs.
Please let us know if you need anything else.
http://www.surrette.com/content/agm-faqshttp://www.surrette.com
HI Hugh and all
As Hugh knows the Outback FNDC was meant for such operation, Apollo
can track the SOC but can not control off SOC.
I have been studying the FlexmaxDC manual and it is a wonderful
measurement instrument, but it has no direct communication with the
charge controller (set
properly without drying it out.
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re
where the
battery may be in any state of charge when the wind starts blowing,
or sun starts to shine.
best wishes,
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re
°F. Lower
than normal temps. will reduce capacity,
slightly extend life, require a higher recharge
voltage, cause SG readings to be adjusted
down. HIGHER TEMPS HAVE THE OPPOSITE EFFECT.
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk
___
List
...
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive: http
in a
slightly random fashion.
I am also puzzled by the above statement where Larry charges each
battery string at constant current, unregulated voltage. I wonder
what current is suitable?
thanks
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk___
List
Hi Roy,
Hi temperatures will hit the battery capacity but
will the battery efficiency be that much
affected? If the battery capacity is inadequate
then you need to compare the aircon running cost
to the cost of buying a 10% larger battery.
Don't you?
Cheers
Hugh
Bob is correct, I do
that has not been mentioned here
is to put in cross bonds to link the strings at each battery or cell
terminal. That way a single cell cannot affect the whole string, it
just pulls down the cells in parallel with it - which are a lot like
an extension of the same cell in some cases.
--
Hugh Piggott
wild swings in voltage.
Not sure how clever a wizard would have to be to figure out all of
the circumstances in such cases but it does not take long to load and
test a new configuration on site in good test conditions. A few more
example configurations would be helpful.
cheers
Hugh Piggott
weather.
best
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List
. In general, most of the world
uses the 230V standard. This also means that standard 230V equipment
can be used in most parts of the world, with only a minor change in
the equipment's electrical plug for a specific country.
Hugh
Darryl,
thank you for that! i've often wondered myself where the 110/220
71% like a sine wave.
--
Hugh Piggott
Scoraig
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re
power and add a dump load?
Seems a shame to kill the renewable input when the grid is down.
--
Hugh Piggott
Scoraig Wind Electric
Scotland
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re
the
calcs quickly in your head to a useful level of accuracy once you
have a bit of experience. As I say its a lot easier with metric
units where the wires sizes are multiples of 1 sqmm, and about 28
metres of that stuff is one ohm.
--
Hugh Piggott
Scoraig Wind Electric
Scotland
http
. It shows windspeed and other data.
http://www.logic-energy.com/
--
Hugh Piggott
Scoraig Wind Electric
Scotland
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options settings:
http
Hugh
At 11:47 -0800 18/1/10, Kent Osterberg wrote:
Hugh,
You may be interested in this article A critical review of using
the Peukert equation for determining the remaining capacity of
lead-acid and lithium-ion batteries by Dennis Doerffel and Suleiman
Abu Sharkh from the School
of
a battery. This last is a very hard thing to ascertain.
:-)
--
Hugh Piggott
Scoraig Wind Electric
Scotland
http://www.scoraigwind.co.uk___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options settings:
http
:
- - - - -
Hugh Piggot writes:
According to Peukert's law (and manufacturers' data bears this out
well) the capacity of a battery depends on the rate of discharge.
Everyone who knows anything about batteries knows that the capacity
is specified at a certain rate whether it be C20 for a 20
this
far. Thanks for any reactions.
--
Hugh Piggott
Scoraig Wind Electric
Scotland
http://www.scoraigwind.co.uk___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options settings:
http://lists.re-wrenches.org
is reduced. To what
extent is the capacity actually lost by using high discharge rates
and to what extent is it just a voltage effect that impacts on the
terminal voltage, rather than the actual chemical state of the
battery?)
I hope you can follow my descriptions.
--
Hugh Piggott
Scoraig Wind
bit like current of 10 amps entering one end of a piece
of wire and only 9 amps coming out the other end. I understand that
the volts go down due to voltage drop (in this analogy) but loss of
current is entirely a different matter.
Thanks for any help with this rather obscure question.
Hugh
have a few more
that I will save for now. Thanks for any more comments.
best wishes
Hugh
Hi Hugh, When discussing battery characteristics with a chemist at
my supplier years ago I was told the capacity at 0 deg c is around
50% of that at 25 deg c because the ion transfer rate within
disconnect, genstart, etc). I would be interested to know if
this type of temperature compensation exists and indeed whether it is
legitimate in terms of sustainable battery management.
Hugh
Hugh,
Sorry if you found my response limited but have been traveling since
early this am and don't
about the end-of-discharge voltage for
sustainable cycling of their Rolls batteries? And is it temp
compensated?
thanks
--
Hugh Piggott
Scoraig Wind Electric
Scotland
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List
of such
devices after a few partial charge swings up and down over period of
days. So the reality is that we rely on inverter LBCO settings or
rules of thumb such as never let the voltage drop below 47 to
ensure that the batteries do not get abused.
Best wishes
Hugh
Hi Hugh Wrenches,
Regarding
between solar users (who count out the
amp hours and know exactly what they have to work with each day) and
wind users (who can party like mad sometimes and then have nothing at
other times).
Hugh
Hugh,
Feeding off diagonal corners, as you are describing, only keeps the
wire resistance
due to carelessness.
--
Hugh Piggott
Scoraig Wind Electric
Scotland
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options settings:
http://lists.re-wrenches.org/options.cgi/re
,
to parallel the battery, then the only issue is where you connect
the charge source and/or inverter.
Hugh,
The connection is very easy, if you look at the photos on the page I
linked to the connections to the inverter breaker (which is where I
also connected the charge source) come off the bus bars
guaranteed to have a lethal voltage between the generator
frame and house ground. That doesn't seem likely to be the safest
solution although it might be the simplest to install.
--
Hugh Piggott
Scoraig Wind Electric
Scotland
http://www.scoraigwind.co.uk
...if you set that for a high
value the same high rate would be present not only when the battery
is highly depleted but also when the battery is approaching 80%
state of charge. That seems scary to me.
--
Hugh Piggott
Scoraig Wind Electric
Scotland
http://www.scoraigwind.co.uk
to have a voltage regulator on the hydro. There
is also plenty of dump power to be allocated.
I got my controller from Nigel Smith ni...@sustainablecontrol.com.
--
Hugh Piggott
Scoraig Wind Electric
Scotland
http://www.scoraigwind.co.uk
___
List
/pipermail/re-wrenches-re-wrenches.org
List rules etiquette:
www.re-wrenches.org/etiquette.htm
Check out participant bios:
www.members.re-wrenches.org
--
Hugh Piggott
Scoraig Wind Electric
Scotland
http://www.scoraigwind.co.uk___
List sponsored by Home
will get to meet some of you there.
Best wishes,
--
Hugh Piggott
Scoraig Wind Electric
Scotland
http://www.scoraigwind.co.uk
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options settings:
http://lists.re
66 matches
Mail list logo
