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Old 09-06-2015, 10:01 PM   #11
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After I typed that we kinda figured it out about the flexible panels. And the bus we are thinking about getting has a somewhat flat roof.
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Old 09-06-2015, 10:46 PM   #12
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Yeah I really like the idea of flexible panels I just don't think they are there yet... maybe in the future. Just like lithium batteries, too new (and expensive) to rely on for what we want them for. Give them both 10 years.
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Old 09-07-2015, 01:33 AM   #13
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Yeah I really like the idea of flexible panels I just don't think they are there yet... maybe in the future. Just like lithium batteries, too new (and expensive) to rely on for what we want them for. Give them both 10 years.
lithium batteries are here and now, the price is fair, and they are ready to be used.

No need to wait 10 years.

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Old 09-07-2015, 04:45 AM   #14
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Nat,

Not arguing, but lithium batteries in an rv bank aren't cost efficient for the big ones. Especially if they try to create a big battery bank in what they are looking to do off grid. 600 amp hours would be roughly 4 of these bad boys and they are $1900 a piece.

12V 150AH Lithium Ion Battery | Chargers and Voltmeters | Smart Battery - Products

It would be cheaper to drive to a laundromat on a scooter 4 or 5 times with only a backpack full of clothes each trip!!!

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Old 09-07-2015, 07:37 AM   #15
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Nat,

Not arguing, but lithium batteries in an rv bank aren't cost efficient for the big ones. Especially if they try to create a big battery bank in what they are looking to do off grid. 600 amp hours would be roughly 4 of these bad boys and they are $1900 a piece.

12V 150AH Lithium Ion Battery | Chargers and Voltmeters | Smart Battery - Products

It would be cheaper to drive to a laundromat on a scooter 4 or 5 times with only a backpack full of clothes each trip!!!

-Doc
Scooters rule!
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Old 09-07-2015, 09:29 AM   #16
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Lithiums have some heat issues that need to be sorted out for long term daily use, and probably need to be set up in an array that the current solar equipment isn't optimized for and they are SOOOOO much more expensive for not that great of a benefit. I don't think you are going to notice a benefit until you get above 48v and probably not until you get into the hundreds of volts. once Tesla sorts out their home system then we can all abuse them for our rigs, till then I'll stick to the golf cart batteries.
Also damaged Lead acid batteries are probably not going to start a fire in you skoolie the same can't really be said of lithiums I don't want a blow out to burn my house down (yes I know there are 2 kinds of lithium batteries and the big ones are safer but still quite volatile).

And yes it would be cheaper to scooter in your laundry, but then you at a laundromat, and since you drove there you can't get drunk while doing laundry.
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Old 09-07-2015, 01:16 PM   #17
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You guys are trying to build battery's way bigger than necessary.

Head on over to the DIY electric car sites. That's where the real info to learn about lithium battery's can be found.

And for the record, we can already buy solar and wind charge controllers set up for lifepo4 battery chemistry.

Large load items in a well built system don't run off the battery's. The inverter triggers the generator to start, protecting the battery's from complete discharge, and to fast of discharge (C rating).

The inverter I will be using can share a low voltage AC input (As low as 60 volts AC from long power cord loss), power from the battery bank, and input from the generator all at the same time to provide high current spikes for things like welding, ect.
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Old 09-07-2015, 10:13 PM   #18
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Old 09-07-2015, 10:26 PM   #19
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Old 09-07-2015, 10:36 PM   #20
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