Is it possible you're from either Colorado or Washington? :rolleyes:Quote:
Originally Posted by phorvath
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Is it possible you're from either Colorado or Washington? :rolleyes:Quote:
Originally Posted by phorvath
It was a typo. He meant wiseassed.Quote:
Originally Posted by BoFuller
Phil (phorvath) just PM'd me with his apologies... He meant w i d e s t.
Hello donjuedo!
Thanks very much for this information. The batteries that I have looked at are Rolls (my first choice) followed by Trojan. I calculated that I will need 16 nine volt batteries. Hopefully I can live off-grid 100% with a complete solar system. I don't plan on having a lot of appliances. This will be a complete change in lifestyle and I am looking forward to it.
Have a great day!
Phil
I'm glad it was useful. But now I'm curious about your need. You said you need 9 volt batteries but all the batteries offered have even voltages, not odd. An inverter won't care, but a charger or BMS would.Quote:
Originally Posted by phorvath
Peter
Anyone checked into the latest Tesla whole home battery yet, pros or cons?
I did read a little. The 10 KWH model is not meant for daily discharge, but the 7 KWH model is. It just happens to be the energy I use in an average day, without heating or cooling. To be off-grid and last 3 days due to cloudy weather, I'd be OK with 7 units. That would cost just over 10 kilobucks. I will wait.
Did hear that Tesla isn't even making the batteries yet. Still in some sort of preliminary phase. At least that's what a solar company in Huntsville, AL told us when we inquired about solar.
I have been to several websites to price an off-grid solar system and have gotten wildly different estimates.
The only main appliances that will run will be fridge and separate freezer. The rest is lights(led), ceiling fans, and other small appliances. The well will be on a separate/dedicated solar system.
I was just curious about what was the "norm" with those who have off-grid solar? I know it varies wildly, but I'm trying to get an idea of what is reasonable and what sounds outlandish.
Everyone here sounds like they know way more than I do so I just thought I might get some friendly advice?
Thanks!
I found this that said they would be deliveries this summer, may not be THIS summer but im not sure.
http://www.teslamotors.com/powerwall
Has anyone looked at lithium-ion batteries? I'm thinking of combining a few LiFePO4 ones and some supercapacitors.
Awesome batteries. Had ten (12v) in the space of two normal wheelchair batteries in my powerchair. Crazy expensive short term. Drove further, by far faster because of the steady juice and lasted for years. Could run them down like your laptop battery and then get a full charge in no time. Not sure of practicality due to the expensive nature of those high tech batteries.
I have not, but would be interested in how they compare. Specifically, I like to measure cost, and not just for one battery. That's because batteries are different, so cost per battery comparisons still amount to comparing apples and oranges.
So I figure out kilowatts-hours (energy) one battery delivers from full charge to "empty" (proper discharge level, not run down to 0 volts).
I also assume the battery will need replacement at the end of the warranty period. That's far from perfect, I know, but two things are important about that assumption: battery manufacturers generally lie about the same (AFAIK), and batteries surely don't last forever. (NiFe would likely last past my "expiration date", life expectancy, but I still do that math).
My measure, then, is dollars/KWH/year. I wish all battery manufacturers would advertise their batteries with my measure, for easy comparison.
Peter