Unfortunately this does not take advantage of the extra space around the battery, above the plane of the original battery. This is (almost) twice the surface area of the original. Doubling the width and making a staggered design would yield nearly3x the volume of BP-5L. However the cost for a non-box shaped battery could easily be far higher than this mugen.

To those complaining about price: they have to cover design and production costs. We do not know what the proportions are here. For e.g. if they have $60,000 fixed costs and $27 unit cost per battery, they need to sell 1000 of these to break even.

To those complaining that a larger capacity battery is necessarily bigger, get a chemistry or physics or materials science degree and design a better battery technology.

Hahahahahahahaha. Hurrrr. Durrrrr.

....