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Old 10-27-2009, 07:26 PM   #11
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Re: Let's Talk Battery Banks

Quote:
Originally Posted by Smitty
I know I'm going "overkill" on my battery bank (well, the entire PV system to be honest). I'd rather do it once, and have surplus reserves, as opposed to adding more to the system later-on, or having to run the gen more than a minimum. I'd like to be self-sustaining & not have to use the gen at all....wishful thinking more than likely .

I can't remember what you have in the way of panels? I'll have to go look.

Smitty
We have 3 90 watt monocrystaline panels, 4 100AH AGM's & a Xantrex Pure Sine Wave inverter. We normally run a laptop, modem, light, stereo or TV, & usually have some battery chargers doin their thing ( I think that is everything). Also I work at night too (since we got a Little Buddy propane heater-gettin cold here) so the panels are on standby alot of the time. We haven't had any issues with loss of power even after 3 overcast or rainy days. Keep in mind tho that we have an average of 6 hours a day of insolation (winter) as New Mexico IS a sunny state...

Jonathan
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Old 10-27-2009, 10:49 PM   #12
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Re: Let's Talk Battery Banks

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Originally Posted by Smitty
The item John listed is fine, but would likely require serious modification and cutting down, probably scrapping the majority of the materials in the unit. No sense in buying more than needed to cut-away 75% of the materials. I didn't see a cost, but it's likely more expensive than the idea I have, plus probably more labor-intensive as opposed to just starting from scratch.

Smitty
FYI, the pricing is in PDF so you may not be able to read it. They will make the platform to any width / height / weight (1000 or 1500 lb ratings) desired. And use no-skin, plywood or steel. No after-market cut-away / scrapping / modifications necessary.
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Old 10-28-2009, 12:00 PM   #13
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Re: Let's Talk Battery Banks

Just an FYI Smitty, our cabin is set up with 4 Optima yellow top batteries. They have been in use for the summertime 2 summers in a row & now we are using them full time & they work great. Not sure of the AH or cost difference to AGM but in our experience I am satisfied with them!

Jonathan
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Old 10-28-2009, 02:02 PM   #14
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Re: Let's Talk Battery Banks

Quote:
Originally Posted by Smitty
Aren't the Yellow-Top Optimas AGMs? I'm gonna spend good money on my batteries, too much will ride on them, and I want plenty of reserve power in the event of "unproductive" solar days......now if I could get this dark cloud to stop following me around

Smitty
Ah Dangit Smitty! Now I am gonna have to break away from work, waaalk back thru the snow to the cabin & look at the battery bank cause now ya got me wonderin... I always thought they were gel cell but now I am not sure. I have been so busy i haven't had the chance to really check out the cabin setup...pathetic huh?

I am going to build a wind generator & if the first one works I will build a second so the bus & cabin are covered. This way I have backup power for each system as when it rains here it is usually windy...got myself covered for the most part then...

Jonathan
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Old 10-28-2009, 05:48 PM   #15
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Re: Let's Talk Battery Banks

*** paging the_experience ***
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Old 10-28-2009, 07:34 PM   #16
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Re: Let's Talk Battery Banks

Quote:
Originally Posted by Smitty
I'm gonna spend good money on my batteries, too much will ride on them, and I want plenty of reserve power in the event of "unproductive" solar days......now if I could get this dark cloud to stop following me around
Oh Smitty, make that cloud WORK FOR YA! If it's cloudy, then there's probably wind (and not from the double bean chili with deviled eggs of the night before ). Get a windmill to help top off those uber batteries. Or, build one like Jonathan's doing.

Northern Tool selection of windmills:http://tinyurl.com/5ctggk
or
DIY Vertical Axis windmills (more efficient for mounting on top of a bus):http://tinyurl.com/neescn
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Old 10-29-2009, 05:21 PM   #17
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Re: Let's Talk Battery Banks

Quote:
Originally Posted by Smitty
John, (you're right, for some reason I can't view PDF's) could you see what the price is for something around 24" deep X 60" long? Or anything close to that.....just for curosity?

Smitty
24" deep x 60" long looks to be $348 for Aluminum 1000lb / 70% extension / no deck (just the slides no plywood or metal deck)
$450 for Aluminum heavy duty 1500lb / 70% extension / no deck
$314 for Steel 1000lb / 70% extension / no deck
$405 for steel 3-rail 1000lb / 100% extension / no deck

Plenty of more options / prices / etc... but this should get a ball-park.

I'd go with the steel 3-rail 1000lb / 100% extension or build your own out of a combination of lesser slides.
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Old 10-30-2009, 10:15 PM   #18
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Re: Let's Talk Battery Banks

Smitty, Since you mentioned Sean's bus I thought you would be interested in more info from a solar thread I had posted a while back- (sure you read this but thought since you asked it just gives one persons usage & equipment requirement info & it looks like quite a system... thread: viewtopic.php?f=11&t=4516&p=38725#p38725

This is SeanF's usage on his bus:

ezbme wrote:
Sean, What wattage panels are you using? Actually if you don't mind what is your system comprised of - panels, batteries, inverter etc? I am curious as to the approx useage (wh) you are using daily & the sytem you have set up... Thanks!

Jonathan

4 x KC120 panels (120 watts each, tilted to 50 degrees in winter months)
400 watt wind turbine (not currently set up)
4 x Trojan L16H batteries (6 volts, 420 Amp hours each)
MorningStar Tri-Star TS-45 solar charge controller
Square-D fused safety disconnect
Exceltech pure sine wave inverter
Xantrex DC Load controller
Trimetric 2020 system monitor

I use about 80-100 amp-hours per day (960-1200 watt-hours).

Loads:
Desktop PC/flatscreen monitor 9 hrs/day x 5 days/week
Laptop computer about 60 hours per week
Satellite internet modem, router, 60 hours/week
DC fridge, draws 25 watts, runtime depends on bus temp
LED lighting
DVD player, car stereo, 10 hours/week
2 small muffin fans, always on
Various chargers - cell phone, AAA & AA batts, cordless power tool batteries, etc
Occasional coffee grinder, food processor, electric shaver, water hearer exhaust fan, water pump

That's about it.
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Old 10-30-2009, 11:03 PM   #19
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Re: Let's Talk Battery Banks

Quote:
Originally Posted by TygerCub
Quote:
Originally Posted by Smitty
I'm gonna spend good money on my batteries, too much will ride on them, and I want plenty of reserve power in the event of "unproductive" solar days......now if I could get this dark cloud to stop following me around
Oh Smitty, make that cloud WORK FOR YA! If it's cloudy, then there's probably wind (and not from the double bean chili with deviled eggs of the night before ). Get a windmill to help top off those uber batteries. Or, build one like Jonathan's doing.

Northern Tool selection of windmills:http://tinyurl.com/5ctggk
or
DIY Vertical Axis windmills (more efficient for mounting on top of a bus):http://tinyurl.com/neescn
Thank you Than you TC for the DIY Verticle Axis windmill...
I AM going to build one of these soon, weather permitting! AND I learned how to cut cirles on the table saw, how cool! Do you have any info for completing the windmill - electronics & stand/pole for it to be complete?

Thanks! Jonathan
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Old 10-30-2009, 11:05 PM   #20
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Re: Let's Talk Battery Banks

Quote:
Originally Posted by Smitty
Thanks for the link!

Smitty
No problem! You have helped me out a bunch... I am gonna try to build The verticle windmill. Got me thinkiing how much power I could generate as it is pretty windy on the property!

Jonathan
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