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Wrap this 36" long heater around your vehicle's battery to maintain its charge and to ensure that your engine turns over in the winter. Plugs into 125-volt outlet. Vinyl cover resists oil and acid.
Features:
Specs:
As the temperature gets colder, your engine not only requires more power to start, but it also receives less power from the battery. As you can see in the chart above, your battery's power drops to 65-percent of its normal capacity at the freezing point. At this same temperature, the engine needs 65-percent more cranking power than it would normally need in 80-degree weather. By using this thermal wrap on your battery you can ensure that the battery will maintain the same amount of power that it has in warm temperatures. As a result, your engine will get the cranking power that it needs to help ensure a successful startup.
California residents: click here
Good product, Great Service, fabulous p eople
It’s great
Good for the cold winters in Canada.
Works great, perfect size because i can only wrapped 3 sides anyway. Big difference when battery is on the weak side too
Great product and very fast shipping t hanks
I installed this battery blanket right after I received it and had our first sub-freezing temps shortly afterwards. You can definitely tell the difference when cranking over the motor. Works as I had hoped it would.
Great product. We use these on agriculture machines. Has kept our batteries warm and we have not experienced any battery swelling issues (due to cold weather). Product was easy to install and has performed well. No complaints!!!
Awesome unit. I use it for my electric golf cart to keep the batteries warm during the winter months.
The battery warmer gets quite hot it seems. I intend to run this without a timer overnight. Is this going to burn out running for 12 hours at a time
Needed a heater for the batteries in our semi to keep them from freezing. Shipped quickly. Showed up packaged well. Installation was easy. Seems to be a well made product. etrailer is a great place to order
Cust. service is top notch. Thank you for contacting the USPS to locate my package. It got their attention. They were reluctant hand it over. After speaking with the Postmaster we finally received our Kat's battery heater. Made in the USA. Thank you for your much valued time for all your wonderful agents in your customer service dept. Also, it was packaged very well & arrived in great shape.
Very good product. Worked fiawlessly. Used it for a re-conditioned battery which begins to freeze @ about 15 - 16 F. Kept it from freezing overnight on several nights. Also purchased a battery pad heater for another car with a slightly larger battery. The pad heater did the same thing perfectly. If you live in the northern parts of the US and want to use re-conditioned batteries (Epsom salt & distilled water) over the winter, these heaters are essential for protection from freezing. Thanks etrailer.
Works perfect for an area of the country that rarely sees sub freezing temperatures. They have been a life saver for our generator batteries during those times.
I've been using this to wrap around the 4 lithium battery bank in my motorhome over the course of a horrible winter here in upstate NY (2024/2025) and it saved them from freezing and becoming damaged!! I'm a 70 year old woman (with no one to help me) who doesn't have the strength to pull out my batteries to store them someplace warm, OR to wrap each battery separately. This large wrap worked great! Highly recommend!
These were rated best choice for battery warmers. They work perfectly.
I ordered Saturday night at 10, paid for expedited shipping to ensure my part reached me by mid-week. I did not select overnight shipping. Item was delivered Monday. Excellent turn around time!
Item functions as it should.
I've ordered several times from etrailer, never been disappointed. I will continue to support etrailer.com
Already had one and it works great, really helps save your battery on cold days and makes starting/cranking speeds faster instead of the slow crank you get when your battery is cold, i consider it a must have for winter where we get to -20 easily. The last one I got was from another site and cost at least 20% more there, so definitely happy I could get the same product for cheaper here.
The battery warmers I ordered from etrailer was just what I needed to protect my boat batteries from the ice cold temperatures this past winter, since I couldn't store them inside. They worked perfectly with an thermal switch.
Thank you etrailer for a great product.
I used this through a winter in the north where it regularly is at subzero temperatures. Truck always started without any issues. I also had heat pads on the oil pan and transmission that I bought from etrailer. At -40+ degrees the truck always started relatively easy.
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Victoria H.
1/30/2025
That's awesome to hear Jason, thank you so much for your feedback and continued business! Stay warm!