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JZ
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Who's getting a Telsla Power Wall?
For you house in Baja?
http://www.teslamotors.com/powerwall
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monoloco
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I am definitely interested. Elon Musk is a visionary who can make things happen, he may be the Thomas Edison or Henry Ford of our time.
"The future ain't what it used to be"
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DianaT
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Quote: Originally posted by monoloco  | | I am definitely interested. Elon Musk is a visionary who can make things happen, he may be the Thomas Edison or Henry Ford of our time.
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He is certainly preparing for the future --- we were quite surprised when they installed a car battery station in Lone Pine by the Movie Museum ---
out here in nowhere.
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Pompano
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I've been keeping an eye and an ear open to this developing new battery technology for a while now. Should lend itself well to all homes...on and off
grid. Will be watching it's progress carefully.
I do what the voices in my tackle box tell me.
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mtgoat666
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| Quote: Originally posted by monoloco | | I am definitely interested. Elon Musk is a visionary who can make things happen, he may be the Thomas Edison or Henry Ford of our time.
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Edison or ford? Maybe. Mixed in with a little Popeil and a bit of Silicon Valley tech-gadget hucksterism.
Batteries are interesting, but there are huge environmental costs of manufacturing batteries, and they have a short life span. Never yet seen a
battery that will last decades,... In reading the press this week, no one mentioned battery life and life cycle cost,... Until they mention that, I
smell hucksters!
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El Jefe
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Somewhere in the literature or whatever I read that they had a ten year guarantee. I'm not going to take the time to re-read it all. Somebody can look
it up.
Anyhow, this excites me. I have been hoping that some good tech would arrive before I have to replace my ten year old Rolls batteries. I've already
had one fail and it cost me 1600 dollars to get a new one to my place once I paid import duty etc.
So something like this to replace all twelve of those lead acid relics would be awesome. I too wonder though about raw materials availability etc. I
imagine that they will be recyclable to a degree. We shall see.
[Edited on 5-2-2015 by El Jefe]
No b-tchin\' in the Baja.
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Russ
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I just read some stuff on these and promising as they appear there are others that are working on electrical storage devices too. Telsla is building a
huge manufacturing plant and it was mentioned they too are working on something less expensive. I'm thinking in 5 years or so there will be few lead
acid batteries running our homes. Well, I hope so anyway.
Bahia Concepcion where life starts...given a chance!
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ncampion
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| Quote: Originally posted by mtgoat666 | | Quote: Originally posted by monoloco | | I am definitely interested. Elon Musk is a visionary who can make things happen, he may be the Thomas Edison or Henry Ford of our time.
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Edison or ford? Maybe. Mixed in with a little Popeil and a bit of Silicon Valley tech-gadget hucksterism.
Batteries are interesting, but there are huge environmental costs of manufacturing batteries, and they have a short life span. Never yet seen a
battery that will last decades,... In reading the press this week, no one mentioned battery life and life cycle cost,... Until they mention that, I
smell hucksters!
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Actually there is a rechargeable battery that lasts decades that was first invented by Thomas Edison around 1900. I believe that there are still some
of these batteries in use today after many decades of use. I considered them as replacements for my off grid solar home but they have a low charge
efficiency (take too long to charge) to fit into a daily solar charge cycle.
http://en.wikipedia.org/wiki/Nickel%E2%80%93iron_battery
I was wondering if traditional charge controllers from Outback or Xantrex can accommodate the different charging characteristics of the Li ion
batteries.
Living Large in Loreto. Off-grid and happy.
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Russ
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Don't know about charging with the controller but the probably could be charged thru your inverter's ac??
[rquote=I was wondering if traditional charge controllers from Outback or Xantrex can accommodate the different charging characteristics of the Li ion
batteries.[/rquote]
Bahia Concepcion where life starts...given a chance!
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wessongroup
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Have been waiting for something along these lines .. 
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rts551
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It is being stated on another forum it has its own inverter/controller.
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durrelllrobert
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Nicola Tesla, who I assume the current Tesla Co. is named for worked for Thomas Edison when the light bulb was invented and was at odds with him about
wheather to use DC or AC current to provide electricity to homes. Edison wanted DC and Tesla wanted AC which eventually won out. Now today's Tesla
wants to take DC power and convert it to AC.
Bob Durrell
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wessongroup
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http://www.teslamotors.com/powerwall
Would appear the inverter is an add on ...
Still not a bad deal ... wouldn't think this guy would be putting out "junk" ... just saying
But, of course there may be something which others may know ... all ears
And would certainly like hear from those that are "users" of current solar systems in operation at this time
In field applications are the best to learn from ...
It is interesting that a combination of "both" would appear to be a very excellent solution ... DC and AC working together to produce energy from the
Sun ... very excellent news
btw ... NOTHING lasts forever ... 
[Edited on 5-2-2015 by wessongroup]
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monoloco
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Musk said in the press event that the battery comes with it's own DC to DC converter, I assume that means a charge controller, most of the other LiPo
batteries come with their own battery management circuitry I'm just trying to figure out how many L-16 it would take to equal a 10 kw Tesla battery.
"The future ain't what it used to be"
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wessongroup
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Will say ... 200 lbs. would make it a bit difficult for the "individual" installer by him and/or herself ... nothing that couldn't be worked around
... but, it is a bit heavy
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Russ
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Quote "I'm just trying to figure out how many L-16 it would take to equal a 10 kw Tesla battery."
Me too. For my limited use I have 8- L-16's at 120lbs. each. And they do not like summer here.
Bahia Concepcion where life starts...given a chance!
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ncampion
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| Quote: Originally posted by Russ | Quote "I'm just trying to figure out how many L-16 it would take to equal a 10 kw Tesla battery."
Me too. For my limited use I have 8- L-16's at 120lbs. each. And they do not like summer here.
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So here’s the math. Batteries are usually rated in amp-hours (@20 amp discharge rate) The standard L-16s are rated at 375 ah and you if you
consider a maximum depth of discharge(dod) of 50% (which you don’t want to do every day with L-16s) you get 375 x 0.5 x 48volts = 9,000 kwh per day.
This assumes a bank of eight L-15 batteries in series. They say the Telsa battery has 7 kwh per day capacity. They don’t specify what the
acceptable dod is for this battery, but typically Li ion batteries can be safely discharged very low, so I believe that the 7 kwh figure is “usable”
capacity. So to replace your L-16s you would need two of the Tesla batteries and you would have a bit more capacity. The problem still remains as to
how to effectively recharge them using standard solar panels and available charge controllers. I would love to see a “breakthrough” battery become
available for off grid use as the battery is still the weakest link in any solar power system.
Living Large in Loreto. Off-grid and happy.
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wessongroup
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Thanks much ..
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Bob and Susan
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| Quote: Originally posted by Russ | Quote "I'm just trying to figure out how many L-16 it would take to equal a 10 kw Tesla battery."
Me too. For my limited use I have 8- L-16's at 120lbs. each. And they do not like summer here.
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russ its NOT your batteries...its the wire coming downfrom the solar panels...too small...I bigger stranded wire will give you MORE current
in the summer when its hot there's a huge resistance in the wire that charges the batteries...heat causes resistance
run a bigger line down
as for batteries being the weakest link...maybe
but an inverter is like a lightbulb...it could go out at any time
all the "stuff" is the weakest link...
best thing is to be "on-grid" for sure...don't let anyone tell you its better to live "off-grid"...it isn't
but its possible
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wessongroup
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Thanks again ... knew some good feed back would be coming from those that operate systems ..
You guys are a great source of "practical" info .. all the time
"The prospect of cheap solar panels combined with powerful batteries has been a source of significant anxiety in the utility sector. In 2013, the
Edison Electric Institute, the trade group for investor-owned electric companies, issued a report warning that disruption was coming. "One can imagine
a day when battery storage technology or micro turbines could allow customers to be electric grid independent," the report said, likening the speed of
the coming transition to the one from landlines to cellphones 10 years ago. Suddenly regulated monopolies are finding themselves in competition with
their own customers."
http://www.theverge.com/2015/2/13/8033691/why-teslas-battery...
[Edited on 5-3-2015 by wessongroup]
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