Re: How does this pass EU battery regulations?
Life of the battery is measured in complete cycles, and secondarily in time. Only something intended for bin, without recycling, after 1 year should have everything soldered and glued.
Very many units will need Battery and/or Flash replaced inside the two years minimum of SOGA. They can probably "get away" with this because it's not a Lead Acid battery (about 99% of them in some places in Europe become new car/truck batteries).
The design is simply to make it cheap to produce. They do not want their products to be more than 18 months to two years, nor repaired as the bulk of their market is repeat sales. It's designed more like a $399 landfill product.