Air compressors , table saws, contractor grade circular saws, all seriously high amp draw items. My Makita 5007NB circular is 13 amps. If remember right the old beater Black Decker saw down at work and an old craftsman I once had are much less.
Electric Drills can vary a real lot. My Makita 3/8 VSR drill is only a 2.7 amp draw tool but the drywall screw gun, 9/16 hammer drill, and 1/2 drill draw up to 5.2amp each. Some heavy duty drills even more.
The Milwaukee battery charger is 2.1 amps the old Makita says 1.6. A while back I experimented running one, then both together for charging with my little 400 amp inverter while monitoring the voltage output and battery power/ duration with the engine running and engine shut off. Interesting results to say the least.
I'm a big cordless tool fan and I barely ever use extension cords anymore or even plug in lights or my radio either if I don't have to.
I hate paying an electric bill
Most high quality battery tools will perform as well as corded without the hassle of figuring out power. But not everything can be cordless at least not yet.
Nothing really beats having a decent generator for certain remote powered circumstances.
And I still own many feet of extension cords, droplights and air hoses :confused2: