I need to do some work off-grid, and I only have a 1000W generator to drive my power tools, which easily draws twice that (and probably more when starting up) when cutting steel.
Instead of getting a new Honda generator that's powerful enough (minimum 1500$ for 2kW where I live) I was thinking of getting some kind of device that would even out the power draw. The tools usually only draw high currents for half a minute, tops, which would mean a energy usage of about 30s*100A=3000As=0.9Ah, each time. Typically, I would just have less than ten of those peaks, meaning I would require something that could deliver peaks of 100+A (1200VA) and be charged for about 10Ah. It needs to provide 220V AC, not DC.
I was browsing around for "super capacitor" and such, but I only found electronics bits. Then I remembered that a UPS serves a similar purpose, but they don't seem to be able to provide the short bursts of current I require (without costing many thousands of dollars).
I also thought about getting a cheap inverter hooked up to a spare 150Ah battery, but "cheap" and 2000W doesn't seem to appear in the same listings ;-) Found some generic cheap Chinese ones, but the reviews all claimed it would only really supply 500 Watts, so I guess there's a reason they're cheap ...
So do people have a tip on how I can achieve not killing my generator without it costing an arm and a leg?