[RE-wrenches] Tesla 2.0

[Ray]

Simpliphi is another Li+ that is very much worth looking at too. It 
comes in nominal voltages that are usable (unlike Tesla) such as 12 v, 
24v, and 48 v.  It is also rated to 10,000 cycles to 80% DOD, which 
actually could outlast the rest of the system.  It is Lithium Iron 
phosphate which is heavier than the Tesla, but not prone to thermal 
runaway.  I haven't tried them yet, so I'm just in study mode.  The 
voltage stability as the battery discharges is very attractive.  Even at 
high discharge rates, it holds above nominal voltage to 90% DOD.

My problem is I have not been able to figure out how much we can under 
size these relative to their lead acid counterparts.  Being that they 
have better capacity at high discharge rates, are less temperature 
sensitive, can't freeze, and can be discharged 100%, I'm guessing we can 
downsize them by about half, but I think it would really depend on the 
application.
Anyone that is using Li+ (like Larry Crutcher) want to chime in on 
sizing of Li+ battery banks compared to lead acid?  Downsizing is the 
only way we could possibly start making these affordable.

R. Ray Walters
Chief Technical Officer, RemoteSolar.com
BS Mech Engineering, 1988
Former NABCEP Certified, 2004-2016
Licensed Master ELectrician, Colorado
303 505-8760

On 3/11/17 9:51 AM, Chris Mason wrote:
> Don't ignore Sonnen, their ECO16 is a solid Lithium based solution. We 
> installed one in Anguilla and, once we got through some software 
> issues, the system performed solidly.
>
>
> On Fri, Mar 10, 2017 at 9:43 PM, jay <jay.peltz at gmail.com 
> <mailto:jay.peltz at gmail.com>> wrote:
>
>     HI All,
>
>     I hesitate to bring this up, but I’ve had some questions come my
>     way about the “new” Tesla 2.0
>     battery backup units. And with the demise of Aquion, looks like
>     Lithium and LA are pretty much the only games in town.
>
>     I have been able to find quite little on line ( surprise), pretty
>     much nothing from Tesla directly, but some from other folks by
>     google search.
>
>     Does anyone on the list here know anything solid?
>     For example.
>     what inverter is being used?
>     how do they stack?
>     battery chemistry?
>     actual size ( depending on which info it changes)
>     are they actually shipping?
>
>
>     Thanks
>
>     jay
>
>     peltz power
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> -- 
> Chris Mason
> NABCEP Certified Solar PV Installer™
> Solar Design Engineer
> Generac Generators Industrial technician
>
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