Magnetic Tank Bag with electronic equipment?

[Daze55556]

Hi all, not sure if this is the right forum but here goes..

I have a magnetic tank bag where the magnets fold up under the bag so it can be carried as a shoulder bag or back pack, it has 4 large magnets.

My plan is to carry all my electronic equipment in it; DSLR, Garmin GPS (when not being used), iPhone, GoPro, SD cards, chargers, spare batteries etc.

I have seen some older threads relating to this which indicate it should be ok.

Has anyone got any knowledge or experience with this?

I understand that credit cards/ ATM cards should be kept away from the magnets.

Thanks,

Tom.