700w could work for spartan 1-person cooking, ie mostly boiling water or pasta or something like that. and definetely not boiling the pasta in 5L pot.
heating up the water would be slow compared to 2 or 3 times more powerfull model but once you get it up to temperature the rest of the process takes very little energy. Throw a thick towel over the pot and you can stew something for 2 hours with quite small energy use.
what car/van model you have planned to use in your build?
I have been looking at 4wd vans also and Ducato (dangel) 4x4 seem to have most space available.
What I don’t like about it is the ”aftermarket” Dangel 4wd drive as it is not very common and parts are somewhat rare.
That was my thought, 700W is not enough for a long-term everyday cooking solution, but I'm sure 1600W will be (the reduced power mode of the Elleci leaf 30 model for example).
I ordered a Ford Ranger chassis cab almost 3 months ago, with all the semiconductor issues car makers are having I probably won't get it before next year, hopefully, sooner. I was looking at the used market first but couldn't find a decent single cab 4x4 pickup in Italy or Europe in general, the few I found were close to new prices (after you add sales tax in Italy). So I ordered a new one and I'll build a flatbed camper in the back. The single cab will give me enough space for a comfortable camper and the 4x4 ladder frame truck will allow me decent off-road ability.
I previously considered 4x4 vans, but Sprinters are too expensive and too big/heavy and low for decent off-road ability. The Ducato is technically a 2wd only vehicle. I know about the Dangel modification, but like you said not very popular and there's not much info around. I only ever saw one in real life in Iceland. Impossible to find used (at least for almost 1-year research) and for the new one there's a long waitlist and prices are very high. You can't modify a used one as far as I know. The Ducato chassis is not made for off-road and even with that system and many other suspension modifications won't come close to the ability of a pickup, so for the price it's not worth it in my opinion.
The perfect overland vehicle is probably the Iveco Daily 4x4 with a camper box in the back, it's a very strong and capable chassis and transmission and made to carry big loads. But most of them require a truck driving license in Italy and they are also very expensive and out of my budget.
So I decided to go with the pickup + camper box. It's not going to have as much space as a Ducato or Sprinter, but I'll have more off-road ability and I can build myself an all-new custom camper with the same money I could buy a 10-year-old 200k km Sprinter 4x4. I'll mostly travel by myself so I think the space will be enough. Also, I like the idea of having a lightweight fiberglass camper box without thermal bridges which has much better insulation than any metal van.
That was my thought process, of course, everyone has their needs so it will vary.
Also, I just ordered 8 280ah cells from Amy of Shenzhen Luyuan. I'm still undecided between the 12V or 24V but I want the induction so I'll need 8 cells anyway. I now need to decide BMS (was thinking Electrodacus), and figure out the whole system and finally decide 12 or 24V haha.