Induction cooker

Submitted: Saturday, Oct 15, 2011 at 17:21
ThreadID: 89563 Views:14827 Replies:8 FollowUps:15
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Hey folks, I'm looking at getting an induction cooker (the waeco one) has anyone used one? Opinions?
Am thinking of hooking it up to an inverter and battery and solar.
Readable or would it be to much of a drain on resources?

Cheers

Marcel
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Reply By: Member - John and Val - Saturday, Oct 15, 2011 at 18:28

Saturday, Oct 15, 2011 at 18:28
Marcel,

This is the first I've heard of it, and google doesn't know about it either! Can you point to some info?

General rule though - cooking using battery power, with or without an inverter, is close to impossible unless you have a big lot of big batteries. Heating, whether by induction or element or microwave or.... takes a lot of energy, more than any sensible sized battery can deliver. If you are relying on solar to charge the battery.... well..... "tell 'im he's dreaming"!!

We'd be very interested to hear more about this cooker. Can you give us a link please?

Cheers

John
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Follow Up By: Imanoone2u - Saturday, Oct 15, 2011 at 18:52

Saturday, Oct 15, 2011 at 18:52
Hmm. Thought so. I saw a banner add with Tommo(the bush cook) advertising it. It is the waeco induction cooker... I'll see if I can find it again
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Follow Up By: Imanoone2u - Saturday, Oct 15, 2011 at 19:08

Saturday, Oct 15, 2011 at 19:08
Ha... Found it.
http://www.caravancampingsales.com.au/news/2011/fresh-gear-at-victorian-rv-show-26185

Was actually a product from ecoheat... Makers of the dream pot like ecopot.

Never the less, it is their claim to use an induction cooker WITH a 85w solar panel

Readable?

Cheers

Marcel
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Reply By: skulldug - Saturday, Oct 15, 2011 at 19:11

Saturday, Oct 15, 2011 at 19:11
Iman,

Not entirely sure what you are referring to but I have an induction cooktop in the kitchen at home and a single hotplate for the caravan. Best cooking device I have ever used because of the speed to heat, no heat on the glass surface and immediately responsive to controls. I couldn't say how much it would draw from your battery but if you are on a powered site it's the ducks nuts. I bought my single hotplate from a camping show and the guy was saying it was developed for RVs. I think it would be good if you had an acre of solar cells on the roof.

Skull
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Follow Up By: Imanoone2u - Saturday, Oct 15, 2011 at 19:15

Saturday, Oct 15, 2011 at 19:15
Hey Skulldog,
I think our post crossed. I posted an update with link
http://www.caravancampingsales.com.au/news/2011/fresh-gear-at-victorian-rv-show-26185

Cheers

Marcel
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Reply By: Member - Mary W NW VIC - Saturday, Oct 15, 2011 at 20:59

Saturday, Oct 15, 2011 at 20:59
been looking at this myself for cooking in the poptop camper when weather is bad.What size inverter would be needed and is it feasable to boil water heat tin food etc without totally draining battery(aux 80 AGM)Thanks,
Mary
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Reply By: Member - Heather MG NSW - Saturday, Oct 15, 2011 at 22:03

Saturday, Oct 15, 2011 at 22:03
I bought one of these and love it for both at home and in the caravan...

http://www.kitchenwaredirect.com.au/Appliances/Induction-Cookers/New-Wave-Portable-Induction-Cooker

NOTE: This will only work with induction compatible cookware. To test if your cookware is induction compatible simply place a magnet on the underside of the pot or pan and if the magnet sticks then it is induction compatible.

Here's all you need to start cooking anywhere. If you're on the road, enjoy camping or need your long-term guests to have their own food-prep area, this is the unit for you.

With no flames, smoke and pollution, induction cooking is environmentally friendly, safe and efficient.

How does induction cooking work? This high-tech appliance converts digital frequencies into magnetic fields within the cooking vessel, which in turn heat your food. Not only does this make cooking faster and safer, cleaning is much easier with the high quality heatproof black micro-crystal glass plate and stainless steel surround.

The process relies on electrical currents within the material to produce heat. Heat is developed directly and instantly inside the pan within one second. This is much faster than any other method. That watched pot will boil quickly no matter what the old expression says.

With 10 power levels, various temperature settings (ranging from 60 C to 240 C) and a 3-hour timer, cooking has never been so easy!

regards,

Heather
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Follow Up By: Member - Mary W NW VIC - Sunday, Oct 16, 2011 at 11:03

Sunday, Oct 16, 2011 at 11:03
Thanks for the info Heather.Do you always run it on mains power or do you use an inverter as well?
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Follow Up By: Member - Heather MG NSW - Sunday, Oct 16, 2011 at 11:38

Sunday, Oct 16, 2011 at 11:38
Have only run it on mains power but it has variable wattage settings and can run on as low as 600 watts.
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Reply By: Member - John and Val - Saturday, Oct 15, 2011 at 22:14

Saturday, Oct 15, 2011 at 22:14
"Weighing just 1.5 kg, the Ecoheat boasts twice the cooking speed of conventional electricity or gas, and is designed to run on 800 watts and draw only 3.5 amps.

Used in conjunction with a 1 kva generator or an 85 watt solar panel and inverter, the Ecoheat can also be fitted with a barbecue plate for a quick and easy barbie."


Probably comes with snake oil too! This thing might be fine running on mains power or a generator, where (if this hype is at all accurate) it will pull 3.5 amps. Running through an inverter from a battery it will pull about 80 amps from the battery. Run from an 85W solar panel?????? no!!!!


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Follow Up By: Imanoone2u - Sunday, Oct 16, 2011 at 08:39

Sunday, Oct 16, 2011 at 08:39
Thanks John n Val,
Thanks for your reply, excuse my ignorance though, but am I right that when you say 'draws 80amp from a battery', one could, in theory at least, with a 200ah battery run the cooker for 1 hr and drain the battery by 40%? A lot to fill again with a 85w panel still...

Marcel
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Follow Up By: Member - John and Val - Sunday, Oct 16, 2011 at 12:08

Sunday, Oct 16, 2011 at 12:08
Marcel,

I have no argument with inductive cooking. It's used in industry and in the kitchen, and in the right circumstances is excellent. In many cases though, while it may be very effective, it is not very efficient. There have been complaints about the noise made by the fan - why is there a fan? To get rid of the waste heat!

When powering anything from batteries we can't afford to waste energy.

You ask - Could you draw 80 amps from a 200 Ah battery for an hour and use 40% of the battery capacity? In principle yes. In practice though the battery will suffer badly supplying this high current, and efficiency will be poor. (The 200 Ah rating usually refers to discharge at the rate of 5% per hour, not 40%.) After an hour you would have a very hot battery and have used up a fair part of its life span. The only lead/acid batteries that would cope with this without being badly damaged are very expensive types.

As you so rightly say too "A lot to fill again with a 85w panel". To run even the small (850W) inductive cooker will cost thousands of dollars in batteries and solar panels. Or for $20-30 you can buy a little canister gas stove that will do much the same job.

As others have said here, inductive cooking can be great, but cooking really isn't a job for batteries and solar panels.

Cheers

John



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Follow Up By: Imanoone2u - Sunday, Oct 16, 2011 at 19:30

Sunday, Oct 16, 2011 at 19:30
Thanks John... Your explanation make a lot of sense now.
I might leave the induction for some other day..place....
might wait till nuclear comes around.... (just kidding)

Many thanks to all whom contributed.

Marcel
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Reply By: Ozhumvee - Sunday, Oct 16, 2011 at 07:37

Sunday, Oct 16, 2011 at 07:37
We have a single induction cooktop bought from ebay, Aussie seller and was around $79 from memory. Has ten power levels from 200 to 1800w, ten temp settings (you dial up 120deg and it will keep cooking at that exact temp.) The 1800w inverter in the Oka runs it easily even at full power.
As has been said they are very quick, will boil water far faster than a 2.4kw electric jug, no hot surfaces but a magnet must stick to the cookware.
I looked at the Ecopot one at a show recently and they are having a lend of you, asking $250, only 800w output and no temp setting only a few power levels.
Weighs all of 1.5 kg and we use it when we want to cook outside without a fire or inside if we run out of diesel for the Webasto.
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Follow Up By: Ozhumvee - Sunday, Oct 16, 2011 at 07:41

Sunday, Oct 16, 2011 at 07:41
Here is a link to a similar one to ours Induction cooktop
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Follow Up By: Imanoone2u - Sunday, Oct 16, 2011 at 08:47

Sunday, Oct 16, 2011 at 08:47
Hi Peter, does yours need a 15a plug too? And could that be changed to a normal 10a plug...without too many serious repercussions? Possibly not able to use it at full power....
And, in this case, the cooker specs say 300-2000w, does that mean if one was having a eg:1000w inverter, the cooker could only be used at maximum 1/2 power?
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Follow Up By: Mick O - Sunday, Oct 16, 2011 at 08:50

Sunday, Oct 16, 2011 at 08:50
Pete, you remain "The King" of ebay lol. Good find. I saw these being peddled at the 4x4 show and they were attracting a lot of interest. Like John I viewed their claims to be able to run it from an 80W solar panel with some scepticism. I'm sure the right inverter will power the things from your on board batteries but you're going to need a lot of storage capability.

Pete I think you forgot to mention that you have enough on board power stored in the Oka to support the electicity needs of a reasonably sized town! Add that to the 1.5 hectares of solar panelling on your roof and you'd actually be pumping power back into the grid I reckon ;-)

Cheers Mick
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Follow Up By: Ozhumvee - Monday, Oct 17, 2011 at 07:29

Monday, Oct 17, 2011 at 07:29
Ours has a normal 10 amp plug and has 10 power settings from 200 to 1800 watts.
The 1800w PSW inverter runs it easily at full power.
We've used it on just the batteries quite a few times and as it cooks very quickly and usually on the lower settings power use isn't a problem.
As Mick0 says we have 480ah of batteries and 500w of solar on board the Oka and after 10 weeks on the road the last few weeks mostly in overcast, patchy cloud conditions we've yet to have the battery voltage fall below 12.5 volts and we use an electric jug, normal toaster and several chargers for laptop etc
I'll try and find a link to the one we have and post it up.
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Follow Up By: Ozhumvee - Monday, Oct 17, 2011 at 07:37

Monday, Oct 17, 2011 at 07:37
Here is a link to the same one that we haveEurotag induction cooktop , bit more expensive than we paid though, ours was around $80.
When solar is free then cooking on electricity is also free ;-)))
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Follow Up By: Member - Mary W NW VIC - Monday, Oct 17, 2011 at 18:47

Monday, Oct 17, 2011 at 18:47
Hi Peter,
As stated above i would mostly run on mains but would like to know minimum size inverter reqd to run in camper for short periods like boil water heat tin food when the weather is unkind'
Thanks,
Mary
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Follow Up By: Ozhumvee - Monday, Oct 17, 2011 at 19:25

Monday, Oct 17, 2011 at 19:25
Mary it depends entirely on how high a setting you wish to use it on/how quickly you wish to cook. I've tried ours on the 200w setting (lowest) on a 300w inverter which ran it ok. If you had a 1000w inverter then you could run it up to that level but inverter outputs rely more on what battery capacity is available than the output of the inverter.
As an example we have a 1000w electric jug which our 1800w PSW inverter on 480ah of batteries runs easily and pulls approx 85 amps when the kettle is on.
We tried the kettle on a friends 1000w inverter on 240ah batteries, the current draw was 110 amps and the inverter tripped the overload and wouldn't run the kettle.
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Reply By: CSeaJay - Sunday, Oct 16, 2011 at 11:19

Sunday, Oct 16, 2011 at 11:19
It certainly looks like a very good product if you are in a van park with mains power

But if you are bush and relient on batteries then I cannot see why one would cook on anything but gas.

If you read the posts on this forum about solar and batteries, 80% say it is for running the fridge and most have challanges keeping the batteries for an extended period. I know also that when the batteris are drained down to 60SOC it takes quite some time recharging when you have only an alternator or solar.

This product, never mind how good or conveneint, still takes a lot of charge from the battery.
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Reply By: Racey - Sunday, Oct 16, 2011 at 12:46

Sunday, Oct 16, 2011 at 12:46
I spent 10 years arranging the testing and approval of domestic electrical products for a major European manufacture. When I see many products such as these offered on Ebay and the like, the alarm bells start to ring. I would question are these products safe and importantly approved for sale in Australia. A favorable customer review does not mean it's safe or approved.

Induction cooking is the most efficient compared to gas or conventional elements. However, the nature of their operation means they do produce strong magnetic fields which may interfere with other electrical and electronic equipment such as pacemakers. The major manufacturers do provide warnings regarding pacemakers even though the STRAY magnetic fields of equipment made by them are of a relatively low level. The products from the internet suppliers is unknown.

When buying over the internet, do your homework and ask for approval information, Approval Number and Supplier Code. The approval number can be verified by the respective State offices and supplier code on the ACMA website.

Cheers
Racey
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