Soldiers are routinely expected to carry far more than this. They may be carrying it in a more effective pack and/or distributed over more of their body. Qui

Soldiers are routinely expected to carry far more than this. They may be carrying it in a more effective pack and/or distributed over more of their body. Quick google search indicates plenty of US Troops were hauling 90+ pounds of gear around in Iraq and Afghanistan due to need to carry a pack + body armor + weapons. I'm no soldier but I have certainly hiked with a 50lb load in a good internal frame pack. And in any case the eBike example was listed. 50lb is not a very heavy load on a bicycle at all. But a battery like this would be better used to make an eBike much lighter. Today they are comically heavy in ways that creates all kinds of extra problems. If you make the battery 1/4 of the weight of a current eBike with a 100 mile range all of a sudden you don't have to supersize everything on the bike and make it heavy, hard to handle, and un-aerodynamic. It would make the whole bike's performance improve even more.