Comment Good idea, stupid form factor (Score 0) 514
The battery is shown installed hanging on a wall. Its dimensions are H: 1300mm W: 860mm D:180mm, so it's too wide to fit in a closet. You also can't fit it under e.g. a workbench (in any orientation), so your only installation option is a blank expanse of wall. It also looks like the front panel is curved, so you can't install it lying on its back and then put anything on top of it.
So once again marketing (hey, let's make a glossy design that stands out and is impossible to hide) wins over practicality (let's make a rectangular box that can be installed somewhere unobtrusive).