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Adding new Powerwall - time for app update?

For anyone who has added a new Powerwall to an existing (operational) PV/PW system, how long did it take for the Tesla app or gateway web site to display the new increased capacity? Any issues to be aware of when adding another PW?
how long ""?
i would think near instant.
hook up the pw, goto the gateway config installer wizard. step 5 (powerwall setup). once config'd, its done locally. then on the next cloud sync it will push the new config to the cloud api, which is in seconds if you have an active connection.

Listed are all the Powerwalls auto-detected by the Gateway. Scan again if Powerwall is not listed."
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