Immersion Water Heater?

DON"T DO IT !!!!!! You are asking for trouble if you use a US product designed for 120v. If you want one, buy it in Europe where it is designed for the 220/240V. Sometimes, not always, the hotel room with have an electric pot for boiling water or the front desk might have one.

International immersion heaters have been around since I took mine to Belgium in the 1980s. Any travel store, or AAA will have one with compatible currency.
That being said, I sure hope they have improved since the 1980s. Mine took a looong time to heat up. Maybe 20 minutes.
Edit. It looks like they have improved. Reviews of this dual voltage says water boiled in a couple of minutes https://www.amazon.ca/Lewis-N-Immersion-Alternative-Chocolate/dp/B08XJSWBJP/ref=mp_s_a_1_3?crid=1KKZ7EWAP3NNV&keywords=travel+immersion+heater+for+mug&qid=1684537814&sprefix=trscel+immersion+heater%2Caps%2C250&sr=8-3

I've been using one for years. Just make sure it's dual voltage. You can find them on Amazon.

You must also know that it must be in water while plugged in. If not, it will short itself out and never work again.

I bought a dual voltage collapsible silicone tea kettle that makes enough hot water for 2-3 cups of coffee. It weighs a pound and cost me about $12 on Temu. I am thinking of taking it, but also thinking of getting one in Europe. I am not sure how easy they are to get your hands on though, so was leaning towards the kettle. Really love having coffee in my jammies in the morning so it is a key consideration for me!!

Thanks to everyone for the feedback - glad to know some folks have used these without a problem. (And thanks for the tip about turning them on and off while submerged to avoid burning them out.) I thought about getting a collapsible silicone tea kettle but probably won't have the room in my luggage for it.

I'm thinking of getting the heater linked below. The description says it is 120/240v and it's sold with a little EU electrical adapter (though of course I'm bringing my own as well). So it seems like it should work for use in Germany and Austria...

Lewis N. Portable Immersion Water Heater + Electric Kettle Alternative for Coffee, Tea + Hot Chocolate, Camping, Travel + Office w/Travel Adapter, White, 120/240v
https://www.amazon.com/dp/B001U0PA7M

(Looks like it's the Amazon US listing for the one MariaF posted from the Amazon CA site.)

That's the immersion heater I use. Never had a problem. In Europe it boils water in minutes.

I also have a collapsible silicone kettle. For me it was too heavy, too bulky and needed an adapter for a three prong cord.

I would guess that this item is very fast at 240 volts and slow at 120 volts. You just need to be ready to unplug it before too much boils or spatters over. You can't use it in a paper cup at a Hilton.

That will work. Also, I recommend that you get a universal plug adapter.

I've already bought this universal adapter by Zendure, so I'm ready to go:

https://powerbank.zendure.com/products/passport-iii-all-in-one-65w-adapter-for-home-travel

Rachel,

I wouldn't suggest using the two gizmos you linked to today together.

Nowhere in the immersion heater advertising or on the manufacturer screenshots does it mention the wattage (or amperage from which that can be calculated), To answer a question one user said 125w. But that is unclear - one other said 600 which is 6 times a normal incandescent bulb.

In any event the second gizmo is only rated to 65 w.

You don't want fire and flame.

The immersion heater comes with a Euro adapter. That's what I use. Forget the fancy stuff.

....I've already bought this universal adapter by Zendure, so I'm ready to go:..... NO, NO, NO --Send it back. It will not work safely. It is rated for 65 watts -- most likely your immersion heater is rated in high teens to may be 2200 watts. You will either blow the fuses or start a fire.

PS -- I just did a quick product search on Amazon -- many immersion heats were rated at 1500, 1800, etc. watts. I only found one "camping heater" that was rated at 300 watts --- well in excess of the 65 watt capacity of the Zendure device. Pay attention to the science and the recommendations of those who understand the science!!!!!

Thanks for the continued feedback. I assume I can use the Zendure for the rest of my electronics (iPhone, etc) so there's no need to send it back. For the heater, I will use the adapter that comes with it (if I decide to take the heater at all).

There are two things to be concerned about. Lets be sure we understand the terminology. An adapter, plug adapter is a passive device about the size of a normal plug head. It allows for the two, prong (or three) US plug to plug into a two pin wall plug in Europe and the adapter needed will vary somewhat from country to country. A "converter" is a electronic device that will convert the 220./'240 volts to 120/130 volts for those devices that NEED to be converted. The size of the converter needed is determined by wattage of the device you are using. You have a small one that will handle up to 65 watt. If it is a dual voltage device (iphones, pads, etc.) then you do not use a converter. Doing so will cause problems. I would leave that converter home as it has the potential, if used incorrectly, to cause a lot of problems.

Frank, I don't understand your concern. The Zendure is not a converter.

To quote the FAQ on the Zendure product page: "Passport III IS NOT A VOLTAGE CONVERTER. Please Use this adapter along with devices rated from 110-250V only."

I have the Lewis N Clark portable immersion heater you mentioned and ended up not taking it on a trip to England last spring. It was bigger than I expected and with the Covid test kits needed at the time, I ran out of packing space. Every place we stayed had a small electric kettle. I also brought Via coffee packets that can be mixed in cold water. Worst case, I would have made iced coffee. But do what works for you and will make you comfortable on your trip! Have a great time.

Thanks, Sharon - I discovered today that I don't really have room for the gizmo after all. I didn't anticipate that because usually I do have extra room in my carry-on, but I bought a new, slightly smaller bag for this next trip.

I usually bring Via packets on every trip as well; I got in the habit of doing that back before I started traveling more internationally. Unfortunately, most of the hotels on the recent RS Norway/Sweden/Denmark tour I did did not have kettles. Hopefully the hotels for the upcoming RS Germany / Austria / Switzerland tour will have them -- cross fingers :)