Tesla nano 120w ?

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Maybe I'm not looking in the right spots, I can't seem to find much info about this power device.
Or maybe that's my first clue.

Specifically,
How securely does the battery cap close & stay latched?
My daily use requires a device that doesn't bump, rattle or vibrate the battery closure open.

Is the 510 connection high quality material / mounted in the device firmly (not glue or press fit) / sensitive to delivery device 510 depth?

Thanks, fo yo time...

Tesla nano 120w ?