Using a portable 1500w model. It has 9 settings. #9 is the full 1500 watts, and they go down from there. Very quick, and very controllable. Can boil water, make spaghetti, brown hamburger, and heat the cooked hamburger and sauce between two pans on the one cooktop. It eats less than 10% of the battery bank according to a Victron monitor I have. Water starts to boil on setting 4 inside of 6 minutes. Once boiling I can keep it there on setting 2 with or without the lid for the additional 11-12 minutes it takes to boil the pasta. The induction plate runs a fan for about 45 seconds after you turn it off. I like it so much, I use it in the house when I can. Way better than the other house cooking sources I have used to include gas, propane, electric coil, electric under glass. We paid like $50 for it online, so if it takes a dump it is an easy replacement. We carry a backup portable propane camp cooktop, but have only used it when we wanted to cook fish outside the cabin area.
Setup includes: 4x GC2 flooded golf cart batteries (2 in series, 2 in parallel for a 12v system), 1x 320W solar panel, 1x 2000w pure sine wave invertor, 1x victron MPPT solar controller. Wire runs are short, wires are fat, so as to create as few bottle necks in the input side of the solar system. Batteries are about a year old, and have been doing well. I also run a 1800w Brevelle Espresso machine each morning to steam milk and make espresso for 2x people. We're on phones and 2x laptops most of the day with this setup too, and run a fan and/or diesel heater all night. We've been out for weeks at a time with this system, and only once had to plug into shore power in the Summer due to a loose ground wire at the charge controller. Once we start having shorter days, and things cool down, I will bring a backup portable Honda clone as a backup. The space is similar to the inflatable SUP we will not need in the colder months. I do not yet have the batteries hooked up so that they charge via the vehicle running yet, which (depending upon how much you drive) may eliminate the portable genny backup draw during the shorter days of the year.
My next build will have more solar, more battery, and similar efficiencies so that we can rely less on petrol backup systems, and possibly use 2x 1500w units at the same time (on lower settings).