I don't know where I read this, but ISTR that one of the motivations of the (failed) JTRS military radio consolidation project was that US infantry were carrying around insane amounts of weight, partly in batteries for various radios.

Can't find a reference now - maybe someone here knows.

I knew that the JTRS project wasn't going to work when they decided that the best way to make portable SDR was to use - drumroll - CORBA. (they should have asked for something broadly like vulkan or perhaps CUDA. CORBA doesn't solve a relevant problem)