BITD I bought a Hilti. God knows how much it weighed (with battery 10lbs.?)
In addition to my projects, I "rented" it to others for $1/hole.
There's a boatload of of holes here in the MWV that were drilled with it. Needless to say, I made my $$ back and then some.
I put up a couple of routes ground up with it- strenuous but doable.
Gotta say, a 4lb drill woulda been a lot better.