Poll

How big is your battery bank?

Under 1000aH
47 (70.1%)
1001aH - 2000aH
14 (20.9%)
2001aH - 3000aH
3 (4.5%)
3001aH - 4000aH
2 (3%)
> 5000aH
1 (1.5%)

Total Members Voted: 64

Author Topic: How big is your battery bank?  (Read 29271 times)

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madlabs

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How big is your battery bank?
« on: September 30, 2010, 09:16:50 AM »
Just wondering the size of folks battery banks. Mine is 1200aH.

Janne

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Re: How big is your battery bank?
« Reply #1 on: September 30, 2010, 09:25:00 AM »
I think it would be better to rate the battery bank size in kWh's rather than Ah's, as kWh's would take the system voltage into account. I also wonder how many % will actually exceed 1000Ah =).
For the record, my 12V battery bank has 210 of tired Ah's :)
Nothing's as easy as drilling a hole in the wrong place

TomW

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Re: How big is your battery bank?
« Reply #2 on: September 30, 2010, 11:40:40 AM »
Well AH is kind of vague.

My 1360 AH @ 24 volts is 2X the energy density of the same AH @ 12 volts and 1/2X the energy density of the same AH @ 48 volts..

Just stating the (not so) obvious.

Tom

dapdan

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Re: How big is your battery bank?
« Reply #3 on: September 30, 2010, 11:43:08 AM »
My system voltage is 24 and I have several banks:
1000Ah, 1500Ah, 1400Ah, 1600Ah

3 of them are AGM and the 1500Ah is a FLA.

Cheers...
Damani

Fused

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Re: How big is your battery bank?
« Reply #4 on: September 30, 2010, 11:56:42 AM »
My battery bank is now 250Ah connected for 24v. Not quite ready for off grid but they hit dump level most every day with a bit of sunshine.  ::)

wooferhound

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Re: How big is your battery bank?
« Reply #5 on: September 30, 2010, 12:07:34 PM »
Here is the same poll from about 4 years ago . . .
http://fieldlines.com/board/index.php/topic,141164.0.html

Tritium

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Re: How big is your battery bank?
« Reply #6 on: September 30, 2010, 12:22:09 PM »
660 amp hour, 12V

Thurmond

ChrisOlson

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Re: How big is your battery bank?
« Reply #7 on: September 30, 2010, 01:26:58 PM »
Two of them - 3,000 amp-hours @ 12 volts, 1,500 amp-hours @ 12 volts.
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Chris

madlabs

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Re: How big is your battery bank?
« Reply #8 on: October 01, 2010, 10:36:56 AM »
OK, I should have done kWh's, but since I didn't, just state your battery voltage along with aH. Mine is 1200 aH, 12V.

DamonHD

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Re: How big is your battery bank?
« Reply #9 on: October 01, 2010, 10:46:59 AM »
40Ah at 12V!  (ie about 0.25kWh usable)

Rgds

Damon

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Re: How big is your battery bank?
« Reply #10 on: October 01, 2010, 09:35:06 PM »
1140 @ 48

JeffD

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Re: How big is your battery bank?
« Reply #11 on: October 01, 2010, 10:55:48 PM »
150Ah * 12v

rossw

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Re: How big is your battery bank?
« Reply #12 on: October 02, 2010, 02:01:47 AM »
3 x 500AH AGM @ 48V here.

freejuice

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Re: How big is your battery bank?
« Reply #13 on: October 02, 2010, 06:18:32 AM »
225 @ 48V, it fills up pretty fast

tanner0441

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Re: How big is your battery bank?
« Reply #14 on: October 02, 2010, 02:53:06 PM »
Hi

340 AH VRLA Deep cycle marine at 12 V

Brian

birdhouse

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Re: How big is your battery bank?
« Reply #15 on: October 27, 2010, 10:40:31 PM »
240ah @ 24v.  FLA

HiddenMountain

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Re: How big is your battery bank?
« Reply #16 on: October 28, 2010, 12:47:03 AM »
800AH @ 12V Sealed lead acid
Energy Systems & Design Stream Engine, 30A @ 24V, 750W 
Magnasine MS4024P AE
4 450AH Rolls Surrette
2 Xantrex 60A Charge controllers
Power, by God!

I hope they never find a cure for Eleutheromania

Simen

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Re: How big is your battery bank?
« Reply #17 on: October 28, 2010, 02:47:59 AM »
530Ah @ 12V (2x6V Rolls S-530)
I will accept the rules that you feel necessary to your freedom. I am free, no matter what rules surround me. If I find them tolerable, I tolerate them; if I find them too obnoxious, I break them. I am free because I know that I alone am morally responsible for everything I do. - (R. A. Heinlein)

wpowokal

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Re: How big is your battery bank?
« Reply #18 on: October 28, 2010, 05:19:18 AM »
1320 A/h @ 100 hour rate 48 V system for residence, 2600 A/h @ 24 V for work shed.

allan
A gentleman is man who can disagree without being disagreeable.

SteveCH

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Re: How big is your battery bank?
« Reply #19 on: October 28, 2010, 09:10:36 AM »
1860/12

picmacmillan

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Re: How big is your battery bank?
« Reply #20 on: October 28, 2010, 09:30:51 AM »
what i did was figure out how much electricity i used in a 2 week period, and i doubled it for storage..i figure we have typically 3 days of sun, and 3 days of rain.....just hypothetically...i also had 80% of power coming from wind turbine(s), and 20% from solar....and no matter what i dont let the batteries go below 60% charged...the trick is to not hurt youre batteries.i had read lots prior to deciding also..there is alot to it, and many myths also....i have a battery file somewhere on here if you can find it..makes for a good read, and worth keeping...take care..pickster

http://www.otherpower.com/images/scimages/1135/battery_chapter.pdf <---From the book: “Solar Electricity” By Robert Sharman

1340-0
« Last Edit: October 28, 2010, 09:49:31 AM by DanG »

hayfarmer

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Re: How big is your battery bank?
« Reply #21 on: January 19, 2011, 04:32:30 PM »

have a 300 A.H. 48 V system
and a 500 A.H. 12 V system
(one of the little critters was removed from pic)
also cleaned up with conduit no recent pic's 8)
« Last Edit: January 19, 2011, 04:37:06 PM by hayfarmer »

hayfarmer

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Re: How big is your battery bank?
« Reply #22 on: January 19, 2011, 04:35:30 PM »
sorry same pic twice :'(

WindriderNM

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Re: How big is your battery bank?
« Reply #23 on: January 19, 2011, 05:04:05 PM »
I'm not sure I have 2 banks 1 is 2-12v 100ahr the other is 12-6v batteries that i got from a friend who was putting in a larger system. there are no labels on them  they look like golf cart batteries. the system is 12v
~~~WindriderNM (Electron Recycler)~~~   
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dnix71

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Re: How big is your battery bank?
« Reply #24 on: January 19, 2011, 06:25:18 PM »
Seven 12v 75AH nominal hybrid deep cycle/start flooded lead acid batteries in series.


DamonHD

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Re: How big is your battery bank?
« Reply #25 on: January 19, 2011, 06:48:47 PM »
I upgraded 10x: do I get to vote again?  B^>

Rgds

Damon

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Re: How big is your battery bank?
« Reply #26 on: January 20, 2011, 12:42:15 PM »

I have no proper battery bank, instead I have
                       3 battery sets: 4 12v 7Ah for a total of 28 Ah (used for a hotwheels type of car by the daughter)
                                             1 12v 110Ah boat battery (this will be the "main bank")
                                             2 old and tired 12v car batteries to play around @24v wired in series

Cheers
http://play.google.com/store/apps/developer?id=opo Check my apps aFoil and aFoilSim on android market.

Antero

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Re: How big is your battery bank?
« Reply #27 on: February 24, 2011, 02:38:35 PM »
I have 24v 2000Ah Nicad batteries.
They are from a big icebraker ship about 15 years old.
Working with full capasity !
I load them with Exmork 2kw 3,8m windgenerator directly without any charge controller, with big my own made tree phase rectifier.
My energy diary; http://translate.google.fi/translate?js=n&prev=_t&hl=fi&ie=UTF-8&layout=2&eotf=1&sl=fi&tl=en&u=http%3A%2F%2Filmaisenergia.info%2Ffoorumi%2Findex.php%3Ftopic%3D275.0&act=url

Antero
Finland
« Last Edit: February 24, 2011, 03:19:06 PM by Antero »

hayfarmer

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Re: How big is your battery bank?
« Reply #28 on: February 24, 2011, 08:24:38 PM »
I upgraded 10x: do I get to vote again?  B^>

Rgds

Damon


Damon you stated upgraded 10X what was your old bank and age ? were they replaced or added to with an isolator ?




curious, hayfarmer

Madscientist267

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Re: How big is your battery bank?
« Reply #29 on: February 25, 2011, 12:37:56 AM »
For the actual RE system itself:

365AH @ 12V / 4.38 kWh comprised of the following:

220AH 12V 8D 'Werker', main battery

'Slaves' (charged from the main battery, either directly or via a boost converter when things are running a little tight) - These are all portable and are used to run countless equipment throughout the house:

4 x 18AH 12V SLA

4 x 12AH 12V SLA

1 x U1-3 'Lawn and Garden' 12V battery (yes, for cranking a riding lawnmower... please don't slap me too hard haha) - Obviously not rated in AH - Going to call it 25 (even though if I ever used even CLOSE to that much, I'd only do it a few times... LOL

-----

There's more, but considering these would be like including the battery in my cell phone... Although, I do regularly charge it from the RE bank! I can't win... LOL ::)

There are 3 other U1-3 Lawn/Garden batteries that are on the 3 'standalone' UPS units for workstations scattered throughout the house. But I don't consider these 'real', since for one, they are very specifically dedicated, and two, they are solely for use with backing up the grid.

Also, another 230AH @ 24V (5.52kWh, 4 x 230AH @ 6V in series) set for the main UPS system for the servers. I don't count them either, for the same reason.

But, if I were to be anal retentive about including ALL the lead-acid storage, I would have to call it 10.8 kWh...

Steve

EDIT - Changed this around, just didn't like how it read... Speaking of anal retentive...  Yup, that's me! :-\
« Last Edit: February 25, 2011, 01:02:16 AM by Madscientist267 »
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How much magic smoke it contains does !