It had been in the works for a while, but now it has formally been adopted. From the article:
The regulation provides that by 2027 portable batteries incorporated into appliances should be removable and replaceable by the end-user, leaving sufficient time for operators to adapt the design of their products to this requirement.
The EHIC doesn’t cover things like a mountain rescue or being flown back to the your home country i.e. the most expensive and potentially life-ruining things, so travel insurance is still a good idea.