If you use a BTU to watt converter here, you see that you will need 1 7,585 watts. Even a big battery has a 1,200 Wh capacity. That will last for about 4 minutes. That’s it; it will drain the battery in a matter of minutes. Well, as we know, batteries are too small to be capable to generate enough electricity to sustain an electric heater for several hours. The best alternative for battery-powered heaters are the portable propane heaters. On a low setting (30,000 BTU heating output), the 20 lbs propane tank can keep the Mr. Heater MH60QFAV running for up to 14 hours. That’s quite a lot, and it has to do with the energy-rich propane and near 100% energy efficiency of the Mr. Heater MH60QFAV.

Best Battery-Powered Heater For Outages Alternative: Mr. Heater MH60QFAV Torpedo Heater (60,000 BTU With 1,500 Sq Ft Coverage) Now for the batteries part: Propane is used to produce the heating output. On top of that, DEWALT DXH12B has 3 USB chargers (to charge your phones, for example), a LED light on top (useful when the night falls), and a fan that distributes the heat evenly. All of these are electric-powered featured and to power them, DEWALT DXH12B uses 20V MAX or FlexVolt batteries. Best Portable Power Station + Electric Heater: EF ECOFLOW DELTA Power Station (Can Be Recharged With A 12V Car Charger)

One of the most authentic (battery-wise) rechargeable cordless heaters you can make includes a power station. The power station is basically a big battery. It has multiple outlets; including USB charges and heater outlets. EF ECOFLOW DELTA is one of the best power stations that can be used to create a power station + electric heater combo that mimics battery-powered heaters very closely. Or even What are the Top 10 affordable (best budget, best cheap, or even best expensive!!!) Rechargeable Cordless Heater available? Etc. Ok, now that we have seen which heaters you can use as battery-powered heaters, let’s finally answer this key question with some calculation: Why Isn’t There A Heater That Runs On Batteries?

Here’s the deal: It has a lower heating output than a standard heater (below 5,100 BTU). However, it still has a 1 lb propane tank. That means that it can generate 3,800 BTU for quite some time (5.6 hours, to be exact). The best alternative to the home heating battery-powered heater are the big propane heaters. They are in a shape of a torpedo so we generally refer to them as ‘torpedo’ heaters.Note: You can find a whole lot of articles about the best battery-operated heater on the internet. None of those heaters are actually powered by a battery. They are 500W to 1,500W space heaters that require a standard 120V outlet and a 60 Hz circuit. You will immediately find out that those ‘battery-powered heaters’ don’t even have a battery, for example. You can bring a 20 lbs propane tank with you when you go camping. That means you will be able to refuel the heater 20 times and enjoy a maximum of 140 hours of heating.

For heating a house, you need 10,000s BTUs. No battery is large enough to provide that. Example: How long will a big 100 Ah 12V battery be able to provide 60,000 BTU of heat needed to heat a 1,500 sq ft house? This power station has 1,800W running watts and 3,300W starting watts. This is the perfect battery used to power an electric heater. On top of that, you have a total of 13 outlets you can use to charge your phone and other devices. Now, if you want to use battery-powered heating for power outages (we all know what happened in Texas in February 2021), no battery will cut it. Power source accepts Makita 18V LXT® and Compact Lithium-Ion Batteries and features a USB power port for charging portable electronic devicesThe main power is still generated by propane. This is one of the most capable battery-powered heater alternatives; it can produce up to 12,000 BTU of heat when running on 100% capacity. At the lowest setting, the 1 lb propane tank is can provide heat for up to 7 hours. Of course, you can always bring a 20 lbs propane tank with you on camping and refuel the DEWALT DXH12B 20 times. With below 10 lbs total weight (9 lbs, to be exact), it is very portable. In fact, if there were a battery-operated heater for camping, it should have pretty much the same specifications as the Mr. Heater MH18B.

To power a 1,500W electric heater as a battery would theoretically do, you need a generator with at least 1,500W running watts. Generac 7117 Gp2200I can generate 1,700W running watts (and 2,300W starting watts). That makes it one of the smallest (and most cost-efficient) possible generators to power a standard electric space heater.

Makita DHG181ZJ 18v LXT Cordless Heat Gun Body Only In Makpac Case Inc 4x Accessories (1x Glass Protection Nozzle, 1x Wide Slot Nozzle, 1x Reflector Nozzle, 1x Reduction Nozzle & 1x Makpac Type 2 Carry Case

For power outages, you would require a battery-operated heater for a room or even the whole house. For high heating requirements, the best alternative to battery-operated heaters are the big propane torpedo heaters. These can generate anywhere from 30,000 BTU to 100,000+ BTU and and can heat up an entire house in an event of an outage. Of all these heaters, the DEWALT DXH12B is the closest to the true battery-operated heater. This heater actually uses batteries (20V MAX or FlexVolt batteries) but it only uses them for extra features like powering 3 USB plugs, LED lights, and the fan.