Facon 3" x 13" RV Elbow Pipe Heater Pad, Work for 3" Elbow Pipe, 12V Tank Heater Pad, for RV, Camper, Travel Trailer and Motorhome, DC 12Volts-13.5Volts, 3Packs

I combined all three of these inside a lithium battery to ensure charging was ok at low temperatures. They work as expected in my testing and they seem to automatically kick on as expected. They heat up as expected. They also suprisingly consume the ~.55 amps as documented (*about 8 watts). I connected these to a thermostat switch them on and off automatically and can monitor the temp inside the battery case with temp sensors. So far so good. I have only tested them a few times in really cold weather. So I have no long term testing data to share.

Easy to install

Working great so far, using them for Li pro battery heater. They have great adhesive on them, once they are on their on!

They warm up nice for their size but I had issues with it not stay stuck in place.

This is a must have item if you use your Rv in freezing temps. Simply clean the 3 inch pipe just before valve it stays warm so when you dump the water won't freeze at valve and prevent waste for exiting waste tanks. It's best used if your holding tanks have heat pads as well. That way you full covered against freezing. I just tied into my heat tank wiring. So as long as my heat tanks are o. The valve heaters are on. These don't have built In Thermostats like tank mats do they stay on all the time as long as you turn them on. IT also comes with 4 amp fuse and fuse holder if needed. I only needed 2 of the 3 but I may add 3 rd around my water pump which is located in a compartment that may in extreM cold be in danger of freezing

If they were thermostatically controlled they would be a 5 star product. Combine these with their switch and they are great. Pipes made it through 8°F night.

Overall works just as expected. Good adhesive backing, draws rufflly .5 amp per pad, heats quickly

I wrapped these around pipe elbows in my camper to keep the p traps from freezing, while also allowing the gate valve mechanism to freely move in severe cold. They are not on a thermostat so it’s important to place where there will be a cooled surface. If not, they will probably disfigure any plastic material after some time. I probed these after 30 min at 142 degrees.

Seems like a good product. time will tell if they last.

I intend to use these as lithium battery warmers like J Bird mentioned doing. I llike the size as other ones were too big to fie in my battery box for height. I will be putting these on a 12v thermostat as well. I intend to put them in the battery box and will also add a fan with a thermostat for cooling in summer. I am trying to find a louvered vent that will open only when fan is on.UPDATE: I attached one of these heat pads to a battery and found a slight warmth ... I'm not sure it will be enough for the purpose I intend it. I will try to remember to report back when fully installed all three pads.

Haven’t installed these yet. Just wanted to include the paperwork for the ones I purchased. Looks like it covers the whole line of heaters. Will update once i install.EDIT: Well these things dont heat up like they claim to do. Ive tried hooking them up direct to 12v, ive also tried them through a temp switch and nothing 🤷🏻