An ~40kWh pack of deep cycle, lead acid batteries
that provide battery backup for my house costs ~$5k.
Lev Lvovsky via EV wrote:
Wait, really?!?
I’m completely new to the area of home backup, but this announcement
is in-line with the time that I’m researching solar for our home
(on-grid). It doesn’t make sense given our 1-2day/year electricity
outages to backup. Even with that though, how is $5k possible?
http://www.wholesalesolar.com/back-up-power
Their 9.6kWh system is $6.79k - am I completely misunderstanding
something?
Just based on a casual look, you get a cabinet, an inverter, and eight
golf cart batteries. The batteries are an off-brand, so no telling who
actually makes them or what you'd be getting. The specs are not impressive.
A quality GC2 golf cart battery (Trojan, US Battery, etc.) is 220-240
amphours at the 20-hour rate, and costs $75-$150. They are good for 5-10
years, and 600-1200 discharges to 50% or so state of charge. In home
backup use, they will die of old age before you wear them out.
A decent name-brand inverter is going to be $1000-$3000 depending on its
capacity and features. Here again, cheaper ones are readily available;
the question is whether it will last, and if it will still work when you
need it. You would not *believe* how badly some of them are made,
because the seller knows you discover it is junk until too late!
--
Don't worry about people stealing your ideas. If your ideas are any
good, you'll have to ram them down people's throats. -- Howard Aiken
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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