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Chevy volt battery questions


GlennWest

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In the link I posted, he is using half of the AGM bank and getting way more out of them. Had a 1000 agm and 500 lithium. Now concerning the low ah posted, I question that and don't now how to advise you. I know the entire Chevy Volt battery is running Steve Dixion's entire Spacecraft. And he has 3 4400 watt inverters running off it. It would be 8 of those batteries to complete the battery. He running 2 mini splits also.  You can find complete batter paks for 1kish. If you click on the link Steve provided earlier you will find them. 

 

2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1

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4 hours ago, lockmup68 said:

so if I understand correctly, Lion batteries and amp hours are completely different. How many 48v 2kw "batteries" if you will, are needed to get ~1200 amp hours of storage? Or how do you size the battery bank accordingly?

And for chevy volt batteries, do you need to worry about degredataion? How hold is too old? I assume they can be refreshed easily? 

For example, here is a 2kw 48v bank of a 2013 Volt battery for $300 shipped. Is this a good deal? Would one need four of these?

https://www.ebay.com/itm/2013-Chevy-Volt-Battery-2kWh-pack-Solar-Golf-cart/222420955803?hash=item33c952729b:g:PZEAAOSwVJhZSXm0&vxp=mtr

 

Amps aren't really a good way to measure storage, watts is a better way.  Amps * Volts = Watts.  The link above states 47amp at 48 volts, so that is why it listed as 2kWh (47 * 48 = 2,256).  If you want 1,200 amps of usable capacity at 12 volts, then that is 14.4kWh.  To get that, you'd need approximately 18kWh of lithium batteries (assuming 80% usable), or 28.8kWh of AGM (assuming 50% usable).  If measured with 12 volt batteries, that would be 1,500 amp hours of Lithium or 2,400 amp hours of AGM.  If measured with 48 volt lithium, it would be approximately 312 amps, or about 7 of the batteries you linked above.    If your needs are lower, just work the math lower.

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9 hours ago, sipester said:

Amps aren't really a good way to measure storage, watts is a better way.  Amps * Volts = Watts.  The link above states 47amp at 48 volts, so that is why it listed as 2kWh (47 * 48 = 2,256).  If you want 1,200 amps of usable capacity at 12 volts, then that is 14.4kWh.  To get that, you'd need approximately 18kWh of lithium batteries (assuming 80% usable), or 28.8kWh of AGM (assuming 50% usable).  If measured with 12 volt batteries, that would be 1,500 amp hours of Lithium or 2,400 amp hours of AGM.  If measured with 48 volt lithium, it would be approximately 312 amps, or about 7 of the batteries you linked above.    If your needs are lower, just work the math lower.

thanks . that is helpful.

2003 International Eagle 9200i, Cummins ISX, Freedomline

2007 Teton Scottsdale XT4

 

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On 1/5/2018 at 6:36 AM, Jack Mayer said:

Thanks, Scrap. I'm going to do some testing in the next couple of months...I'll report back on "real life" use. I suspect they will fail the test, though. 

That leaves me in the position of using a 12-volt battery dedicated to the genset and Bigfoot. That is not a terrible thing....but I'd avoid it if I could.

BTW, are you going to MATS this year? I may swing down there for a look-see.

Jack - I just found this company, this product should address all your 12-volt needs if you have a 48 volt battery.  https://voltapowersystems.com/wp-content/uploads/2017/10/Converter-Data-Sheet_9.28.17.pdf

They have some pretty interesting stuff, for those with an HDT conversion, they have an alternator that might be able to eliminate the need for a generator in some cases: https://voltapowersystems.com/wp-content/uploads/2017/10/Alternator-Data-Sheet_9.15.17.pdf

Since Liberty Coaches uses their products, I'm guessing they are really expensive, but it's nice to see companies start to focus on a complete 48volt lithium ion solution.

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16 hours ago, sipester said:

Jack - I just found this company, this product should address all your 12-volt needs if you have a 48 volt battery.  https://voltapowersystems.com/wp-content/uploads/2017/10/Converter-Data-Sheet_9.28.17.pdf

They have some pretty interesting stuff, for those with an HDT conversion, they have an alternator that might be able to eliminate the need for a generator in some cases: https://voltapowersystems.com/wp-content/uploads/2017/10/Alternator-Data-Sheet_9.15.17.pdf

Since Liberty Coaches uses their products, I'm guessing they are really expensive, but it's nice to see companies start to focus on a complete 48volt lithium ion solution.

Wyatt at Spacecraft has installed a few of the Volta systems. They are pricey in my book. 

 

Rod

White 2000/2010Volvo VNL 770 with 7' Drom box with opposing doors,  JOST slider hitch. 600 HP Cummins Signature 18 Speed three pedal auto shift.

1999 Isuzu VehiCross retired to a sticks and bricks garage. Brought out of storage the summer of 2022

2022 Jeep Wrangler Sport S Two door hard top.

2007 Honda GL 1800

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The Gold Volvo is still running and being emptied in July. 

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2 hours ago, lappir said:

Wyatt at Spacecraft has installed a few of the Volta systems. They are pricey in my book. 

 

Rod

But they are turnkey.  You're paying for the convenience of the all in 1 system, all by the same supplier etc.  While I like the way Steve and Gail did their's, The Volta is a single check to write.

Not that I have the money, time, or energy to do either system.

Alie & Jim + 8 paws

2017 DRV Memphis 

BART- 1998 Volvo 610

Lil'ole 6cyl Cummins

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I don't see the big deal about the Volta. Yes, it is a nice powerful converter, with protection for batteries. But one still needs an inverter for 120 loads. Just run a standard rv converter off of the inverted power. The inverter will supply battery protection as will the charge controller from solar. Or am I missing something here?

2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1

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3 minutes ago, GlennWest said:

I don't see the big deal about the Volta. Yes, it is a nice powerful converter, with protection for batteries. But one still needs an inverter for 120 loads. Just run a standard rv converter off of the inverted power. The inverter will supply battery protection as will the charge controller from solar. Or am I missing something here?

https://voltapowersystems.com/ 

Compete systems- Battery packs, inverters, solar controllers, converters, everything needed to whatever kw level needed.

Alie & Jim + 8 paws

2017 DRV Memphis 

BART- 1998 Volvo 610

Lil'ole 6cyl Cummins

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15 hours ago, GlennWest said:

Question, what would be the difference in using a standard RV converter running off an inverter vs one powered right off the battery pack? 

Two main items.  One, efficiency.  Going from 48v DC via an inverter to 110AC, and then converting back to 12v is going to lose more power in the process than just 48v DC to 12v DC.  Second, capacity.  The DC converter from Volta has a continuous capacity of 220 amps at 12 volts, with peak at 440 amps at 12v.  Most RV converters that run off 110 are only 50 to 75 amps at 12v.  So for high amperage loads for 12volts (such as starting a generator, slides, levelers, etc.), the Volta DC converter is the first one I've seen that would easily cover all your 12v needs from a 48v battery.  The only other option seems to be to have a separate 12v battery for 12v lots (as Jack suggested), but the Volta DC converter simplifies things (albeit at a high cost).

In regard to your other question, yes, you would still need an inverter to run your 110v loads off your 48v battery (along with the DC converter to run your 12v loads).  So yes, you would need both if you wanted just one battery for all house loads.

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33 minutes ago, Lou Schneider said:

Like the old saying goes, if you have to ask the price, you can't afford it.

Not necessarily so. Can't find a price on it. I been looking 

2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1

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