I have experience with induction on an off-grid solar/battery setup, they are awesome and so much more efficient than old electric burners. A standard outlet is

I have experience with induction on an off-grid solar/battery setup, they are awesome and so much more efficient than old electric burners. A standard outlet is good enough for a single induction burner, it heats water faster than a junky microwave. Let me try my hand at some math around this, it may be wrong as I am a lay person. This requires 15amp service (from FAQs), so it can pull (120x15) = 1.8kw from the outlet. I will assume you can draw the 3kwh battery to 0 (good lithium/over provisioned). If this thing can output 10kw on a single burner, assuming no overhead for fans, which it will certainly need, it will be using 10-1.8 = 8.2kw from the battery, the rest coming from the wall. Battery is 3kwh. So it will be able to run for (3/8.2x60) somewhere around 20 minutes at this rate before dropping back to 120v outlet power. 20 minutes seems like not much, but that's cooking at an incredibly high heat. Stir fry needs like 3/4ths of that power, and it's done in ~5 minutes. A more likely scenario is you want to make a a nice spaghetti dinner but you are impatient, you have 3-4 pots going. Steaming carrots in one, boiling noodles in another, browning meat and also simmering sauce. So lets look at it as one 120v burner, plus 3 battery powered ones. If they also work at 1.8kw then the run time would be 3x1.8 = 5.4kw. 3/5.4x60 = ~33 minutes. In reality the steaming/noodle burners would need a ton of power for a few minutes, then only 1000watts. The browning burner probably needs 1200 and the simmering one 600-800. Seems like a pretty brilliant idea to add the battery. You suddenly made a single induction burner setup into a 4 burner setup. I have a hard time imagining a single meal that will get close to emptying this. The FAQ says if the power goes out you can make 3 meals on this stove-top. I have 4.8kwh worth of batteries and I can make ~2 days of meals (coffee/oatmeal, soup/hot chocolate, spaghetti) off the battery in winter, and run my lights, charge phone. I agree 3 meals would be easy, and I bet you could stretch to more if you were judicious. edit - fixed formatting.