I now own a few eBikes including a DIY conversion, a Sur Ron dirt bike and an Onyx emoto. The batteries are just so insanely compact and heavy, it's surreal. The Onyx has a removable 72v/48ah extended range battery which weighs 37lbs (17kg) [1], similar to the weight of the swappable batteries in the article. Let me tell you, that may not seem like a lot of weight, but it really is and it's *just so dense!* It's the equivalent of over 4 gallons of milk contained in two shoe boxes.
Seriously, every time I have to move - or should I say "manhandle" - the batteries in any of the bikes, I audibly groan and make sure to lift with my legs. The batteries are all different shapes, sizes and in various boxes and all shockingly heavy for their size. The sharp edges of the Onyx battery box is a true hazard as its momentum will give your thigh a nice bruise should you swing it, or your car a nice dent.
Anyways, I'm sharing all this to say: Batteries are heavy af. Really. As good as a solution this is for scooters, don't expect it to go much more beyond that. There won't be swappable batteries on your big Zero or Livewire any time soon.
1. https://www.onyxmotorbikes.com/collections/parts/products/rc...