I’m not sure what the additional cost of “test and tag”ging for privately owned equipment in common areas would amount to.
The cost of test and tag would be prohibitive and the intrusion into our lives for inspections would be unacceptable, to the point that most people would refuse to comply, even if they knew their equipment was up to scratch.
Insurance companies employ very smart people to look at real-life statistics and evaluate risk. They tend to err on the side of safety when it comes to calculating premiums. If and when your insurance policies – strata or home and contents – include “extras” for charging electric cars, bikes and scooters – either in the comunal garage or in the home – you’ll know it’s time to be genuinely concerned.
Right now I would imagine we are at greater potential risk from balcony barbecues and discarded lit cigarettes than the relatively few electric batteries in cars and on bikes, but it’s still not enough to get the alarm bells ringing.