I want to transfer my google voice number to a different google account. Which I did see is possible.
But I'm wondering if my obi200 will still work then? Or will I have to reset it up somehow?
To access my obitalk account currently I login to the google account that I do not want the google voice phone number tied to.
I think you should try with new account, then transferring google voice number with another account will be worked.
Yes
Delete your GV # from obitalk.com dashboard
Then transfer your GV # to your new email address
Then reconfigure your obi with the new email account credentials.