hi, no I don't believe that I said it excluded time-shifting; if I did somewhere then I was wrong. The true measures of a rechargable battery are retention over time and total energy throughput, with the latter usually more important. Total energy throughput refers to how many times you can cycle the battery. My 7.8 year calculation assumed 100% energy retention. If you can manage cycling a battery twice a day instead of once, your warranty will be voided in half of the time. I don't believe any battery has an unlimited # cycles unless DepthOfDischarge is limited to small percentages such as 10%. That's fantasy. So for a time-shifting application (charge offpeak, discharge onpeak) where the battery is cycled nearly 100% once per day, it might first encounter the aggregate throughput limitation, depending on the battery. If I were looking for any reason to void someone's warranty performance claim, I would look first to the net accumulated aggregate throughput. Here is the link: https://www.tesla.com/sites/default/files/pdfs/powerwall/Powerwall_2_AC_Warranty_USA_1-1.pdf
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My point is, the warranty is for "70% capacity at 10 years, unlimited cycles, when used in solar self consumption (time shifting) or backup only mode. thats the only point I am making. That is what tesla is warrantying. When used with solar, there is no "37MWh limit" for warranty considerations.
You stated:
@jjrandorin I looked at the PowerWall2 warranty. What you say is true, but only for backup purposes where # of cycles is small (thus unlimited).
And my reply is "Thats incorrect, the warranty is not only for backup purposes, where the # of cycles is small, but for unlimited cycles, at 70% capacity, for 10 years, if charged from solar / PV, and there is no fine print that says otherwise for tesla powerwalls.