Grounding would not be required. I would make sure that lid and can are connected e. g. with a copper band like cars use for connecting ground for the battery.
_________________________
If it isnīt broken, it doesnīt have enough features yet.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.