DERNORD 12V 150W Immersion Heater Submersible Water Heater Element Stainless Steel Heating Element with 1 Inch NPSM Flange

I used this for my son's science experiment which required heating a tank of water and regulating the temperature to a specific value. This worked great, no leaks thanks to the silicone gasket, and was a safe, low-voltage component. we coupled it with our own homemade temperature controller and it worked great! Would purchase again for any similar needs in the future. The heater is made from high quality materials, stainless steel and has the heating element brazed to the terminals for what looks like a long-life component that should last many years. Note: This heater comes with NO NUT, so you need to purchase one separately if not threading into an existing housing with threads or a nut already in place. We used this one: https://www.amazon.com/gp/product/B06X3TVD81/ref=ppx_od_dt_b_asin_title_s01?ie=UTF8&psc=1

I used this element to make a 5 gallon hot water heater that I connect to a 12v deep cycle battery. It works great.

it works very well and waiting to see how it works in its full application...

I put this on my 6 gallon sailboat hot water heater. I put it on a 4 hour timer. After 4 hours, the water was very warm, and completely acceptable to us. We just don't want to run a generator and we are tired of cold showers. So for 36 to 48 amp hours of power, you can have a warm/hot shower. We don't have a solar controller that can dump excess power to a device, but if you do, this is perfect. We, just set our timer to start at noon (after the solar has fully charged our batteries).

It worked ok, for the low wattage that it is. I ended up going with a higher wattage unit. But, if you have amp draw considerations, this may work for you. Its internal resistance is close to 1 ohm, so it will draw about as much current, and the voltage applied to it. Which means, that if you have a 15amp fused cigarette lighter plug, you should be able to use this. But, a 10amp fused plug will likely blow. Yes, I was using it for a non-standard project. By the way, you cannot bend this much at all, without it breaking. So, if you are thinking bending it to make it conform to a smaller space, think again...