My New Favorite Battery.
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I think most off grid people with disposable incomes would gladly pay for "battery as a service". I give you $2K per year. You make sure I always have 20 kwh of storage available.
Ideally that would be provided with a BMS that could take part of a faulty portion of the bank out of service while maintaining power. Tesla's design should be able to perform that function when multiple units are installed. Their commercial scale product probably requires fault tolerance.Comment
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Same can be said for any battery. If you are not willing to take care of your batteries, you have no business having them to begin with.MSEE, PEComment
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As for the plus and minus of DC --- I know if you connect them together they let out a lot of sparks and fire.Comment
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Except that warranties are usually only good for the manufacturer and Prof installers come and go. Even insurance policies have specific requirements to be met to get any money back.
As for the plus and minus of DC --- I know if you connect them together they let out a lot of sparks and fire.
There will be problems, you can expect that, they will work them out or it will fail. I am really not a supporter, so it makes little difference to me what it does. I am happy with my hybrid using grid support.
Another assumption is that " Daily Cycling, 10 KW " means off grid. They may have another concept in mind than whats been expressed. It could have to be grid tied with a hybrid mode.
As far as Musk goes, I heard 30 years ago to stick a fork in Donald Trump he was done. He's still around and is worth 100's of times than what he was then.Comment
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It still means it is an Exclusive product. No one can just buy the battery from Tesla. It comes as a line Item on you solar contractor bill Solar City which Musk owns a large portion and on the board of directors. Whatcha you wanna bet the compatible Inverters from Fronius and SolarEdge are only available from Solar City as the sole distributor. Sound like another Sun Power deal to me. That is what I would do.MSEE, PEComment
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We've got them available. http://www.solarreviews.com/solar-di...rs/alte-store/
A few examples of price:
6 volt @ 465 AH IND9-6V $834
6V 695Ah IND13-6V $1138
4 volt 1618Ah IND29-4V $1500
285 x 18 x 4.2 average daily for our area is 21.54 kwh
285 x 18 x 2.2 low December is 11.28 kwh
Obviously some generator time every so often in November December January
So if I am looking for this battery at 30 percent dod. With 6 volts x 8 batteries for a 48 volt bank.
What will 8 six volt 465 ah batteries in a 48 volt configuration translate into kwh of usable power at 30 percent dod.Comment
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Off Grid Design
Give you your first hint.
Amps = Panel Wattage / Battery Voltage
Now go learn to fish and feed yourself.MSEE, PEComment
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Two caveats on the RE line: 1) Keeping them cool, and 2) Proper maintenance. If either is lacking, these will get no where near rated life. But these aren't too pricey either for a more premium battery.
Trojan's watering system is interesting too. I like how they seem to be focused on real user needs.
With Trojan Smart Carbon Technology, that problem is solved. you can set up your system to operate on 50 to 80% SOC to avoid the hard last 15% absorb charge and only fully charge now and then so the battery will run much cooler and much less gassing. just make sure the charge rate will stir up the electrolyte to avoid stratification.
When that is setup properly with auto-generator start and automatic water refill system, the off grid FLA battery system is almost maintenance free, just check the reserve water and generator fuel once per month.Comment
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Well you know the major problem with FLA batteries on PV RE application is the sulfation. It cause all the heat and maintenance. To prevent the sulfation on FLA battery you have to charge the battery back to 100% SOC most of the time if not all the time. In order to do that on PV RE application you have to charge the batteries with the highest charge rate allowed and with higher absorb voltage which cause all the heat to charge the final 15% SOC.
With Trojan Smart Carbon Technology, that problem is solved. you can set up your system to operate on 50 to 80% SOC to avoid the hard last 15% absorb charge and only fully charge now and then so the battery will run much cooler and much less gassing. just make sure the charge rate will stir up the electrolyte to avoid stratification.
When that is setup properly with auto-generator start and automatic water refill system, the off grid FLA battery system is almost maintenance free, just check the reserve water and generator fuel once per month.
To bad the knuckleheads don't get it.MSEE, PEComment
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When that is setup properly with auto-generator start and automatic water refill system, the off grid FLA battery system is almost maintenance free, just check the reserve water and generator fuel once per month.Comment
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