In practical terms, we’re really hitting the point of diminishing returns with fast charging wattage this high on smartphones. Realme advertises that the GT Neo 5’s 4,600mAh battery can be charged to 100 percent in nine and a half minutes thanks to its 240W charging. That’s super fast, but it’s also basically the same as what Redmi was claiming the 210W charging on the Note 12 Discovery Edition could achieve last year (although admittedly it has a slightly smaller 4,300mAh…