[RE-wrenches] Tesla Powerwall 2.0 - Experience?

[Jay]

Does any know anything about the inverter in the power wall? I never hear anyone mention anything about it. 

Efficiency, surge, tare loss, repairability, 
AC charging capability, generator support, AGS,  etc. All the normal inverter questions. 

Thanks

Jay

Peltz power. 

> On Jul 19, 2020, at 1:16 PM, Jerry Shafer <jerrysgarage01 at gmail.com> wrote:
> 
> 
> I second what Ray says
> Jerry
> 
>> On Sun, Jul 19, 2020, 12:49 PM Ray <ray at solarray.com> wrote:
>> There are so many really good Li Iron Phosphate Batteries available, that are actually designed for off grid, that I don't see any advantage to using a more unstable chemistry that is not designed for off grid.   AC coupled is a 2nd huge no no for off grid, and can leave an unattended system completely inoperable.  Anytime the main battery inverter shuts off for any of several reasons: overload, overtemp, low battery, etc., it also means that all charging of the system ceases as well.  
>> 
>> For Off grid, reliability is absolutely #1, and owner safety is directly related to that reliability.  They can lose water, heat, refrigeration, and communications in an outage.  I'm just tired of  folks dabbling in off grid, and not taking it seriously.  Why in the world would someone even consider using a product that its own manufacturer says should not be used off grid?
>> 
>> Ray Walters
>> Remote Solar
>> 303 505-8760
>> On 7/19/20 10:54 AM, Jerry Shafer wrote:
>>> Hilton, Wrenches
>>> As I recall Tesla does not recommend their battery for off grid applications, they need to be connected to the internet and without that there may be warranty issues. I don't think that the off grid world and daily cycling would work well over time either. How would you jump start the power wall if it died do to low voltage cut out, a genny might work if it connects and stays connected this might also affect the warranty. 
>>> Jerry 
>>> NABCEP PV inspector 
>>> 
>>> On Sun, Jul 19, 2020 at 9:02 AM Hilton Dier III <hiltondier at gmail.com> wrote:
>>>> Greetings, Wrenches,
>>>> 
>>>> I have an off-grid client who has been reading the buzz about the Tesla Powerwall 2.0. I have been reading the data sheets and manual for it and it appears to be AC coupled only. There was talk of a DC input version, but apparently that fell by the wayside. I try to be agnostic about technology, and I'd be willing to subcontract a Tesla-approved installer if, in fact, this was the best solution.
>>>> 
>>>> Does anybody have experience using the Powerwall 2.0 in an off grid PV system? Is it AC coupled only? Can it take generator power without barfing? What is the lead time on these?
>>>> 
>>>> Many Thanks,
>>>> 
>>>> Hilton
>>>> 
>>>> -- 
>>>> Hilton Dier III
>>>> Missisquoi River Hydro
>>>> Renewable Energy Design
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