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Yes, you can do a whole home back up with two powerwalls but you will absolutely need the sure starts installed to prevent failure if you don't have a newer energy-efficient unit. It is recommended that you have 3-4 Powerwalls if you are backing up your A/C because most A/C units will drain your...

@toasters33 Anytime I've seen the inverter go into a loop it typically requires a Firmware Update (Not Software). If you still have a service warranty with Tesla then request they come to the site to update the firmware. If you no longer have a service warranty then you will need to reach out to...