Well, remember that for most owners the charging cradle they received works fine. It is not that poorly designed - mostly failures reported have been due to shoddy assembly. Similarly careless assembly has been reported on the watch itself in various areas.
I got my extra charger I ordered via Kickstarter, included in the package, but have never tested it nor needed to. I also figured out a way to charge the spare battery with an Anker universal charger, just in case. That charger came free with a couple of VGNexus batteries I bought from Amazon.
You might have better luck with the USB port repair staying fixed if you support its attachment to the board, such as it is, with an application of SuperGlue prior to resoldering the connections.
Holding a cable connector in place via only the contact solders would always be a bad design though.
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