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Tesla warrants that your Powerwall will be free from defects for ten years following the date it was installed for the first time. If you only use your Powerwall for self-consumption of solar energy generated by an onsite array and for storing that solar energy for use as backup power, there is no limit on the number of times that you can cycle your battery in this ten year period.
In order to provide this Limited Warranty for the full ten year warranty period, Tesla requires the ability to update your Powerwall through remote firmware upgrades. If your Powerwall is not connected to the internet for an extended period, or has not been registered with Tesla, your warranty may be reduced to at least four years following the date your Powerwall was installed for the first time.
Other terms apply to the Limited Warranty, you can visit the Powerwall support website for more details.