That's nice.We are contemplating over floating vs grounded PCB board designs.
Well, for portable battery power equipment it is inadvisable to use an earth grounding scheme as it is quite intrusive to drive an 8 foot copper rod into the ground every time you wish to turn it on.Where do I get adv dis of both the schemes.
You need to find the portions of the circuit that are exposed to the outside world. Even in floating circuits a voltage needs two points, and if you protect all the exposed pairs you should be good.How to mitigate ESD problems when floating used