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Tech specs—power draw?

abram.herman

I have a converted van that I travel in for part of the year, and with my solar and battery systems, power draw is always a concern. I would love to be able to use the Joule in my van—any idea what the power draw will be for the device?

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Comments

brian_martin2001

This may be what you're looking for.

abram.herman

Thanks for the link! That sort of helps—it says the heating element is 1100 watts, so if the heating element is running at full power that means the Joule will draw 9.17 Ah. Unfortunately it doesn't include info on what the impeller or other electronics will draw, so if anyone at ChefSteps could give more info that would be great!

artstype

you need to know how many amps it draws, the link only tells you the power systems it works within

abram.herman

Yeah, the only thing I can figure out is that the heating element (1100 watts @ 120V) draws 9.17 A, but that doesn't tell me anything about what the impeller or other electronics will draw...

mike.minasian

My understanding is that they are trying to maximize the power at startup to heat the water as quickly as possible. The control algorithms determine how much power it will use at different times, but you can be sure the most will be used during the initial heating. Later on during maintenance mode it will use significantly less power. Talking to @Chris_Young_80640 when I was in Seattle, he mentioned that they are basically trying to max out the spec of what's possible coming out of a typical 120v outlet which is technically ~1800 watts, but for safety reasons and losses, 1100 is the realistic draw. Hope that helps

abram.herman

Interesting, thanks! That's a good point, it will be hard to get a sense of the average Ah draw since it will vary so widely based on how much heat is required at a given time. Still, if I knew the min and max draw, that would give a better sense of how much it might run down my house batteries. Hopefully someone from ChefSteps will weigh in with more details!