We've got a trickle charger at 3 amps hooked up to the battery and it's not quite enough on the coldest days, but the battery is handy when the electricity is out for a day.
An old power supply for a desktop computer works great... You can get the connector adapter for a clean install, or just cut off the connectors and wire directly with an inline fuse of course... I also have DeWalt flex volt 20/60 volt tool batteries and use an adapter for the battery wired to a step down converter that drops the 60 volts down to the required 12 volts ... A 5AH tool battery will run the heater for 5-6 hours depending on the settings... I installed an extra battery adapter, so when the first battery gets low, you can add a battery then remove the low battery to recharge all the while keeping the heater operating without shutting down and restarting...
Hi, it’s best not to lose the power and cool it down properly. Overheating the mother board is not a good idea. If you want to instigate a low voltage cut off have a relay drop out the pump circuit and it will go into shutdown and cool down. Videos on Yt for this. Take care M.
You may want to think about a Y, pull some air from outside and some from inside. This inside one could be a smaller intake. Just a thought to get mre heat and still have fresh air.
True that, defo would be advantages during the coldest months. For now it's still doing a great job and it doesn't take that much to bring the studio up to temperature. Thanks for your comment!
Great job! I used electricity and gas before in the studio, now with the diesel i use kerosene and it's cheap. 10 liters every 2 weeks (12 hours per day) for a 10 sqm space and fresh air :D
If you want to save money you need to more efficiently install your diesel heater. The way you have it now you are heating outside air. You should heat inside air just as a 'normal' home furnace does. The diesel heater can put a finite amount of heat into the air stream running through it. Therefore if the outside air temperature drops 10 degrees so will the heated air expelled by the diesel heater. Run a second duct from the air intake (not the combustion air intake) to the inside of the home.
Thanks for your comment! Much appreciate your advise. The we've set it up is definitely a bit of a waste, however we love the fresh air it provides and it takes very little to heat the studio. It's well insulated and almost air tight, so fresh air has always been a struggle. Until now :D
Check glow plug and hard fuel line grommet in heater no air gaps or it smells of plastic. Needs weather protection or ecu boards rot as not encapsulated
@@GardensforLife future video idea- (because I do not know how) how to encapsulate the electronic board correctly or worthy since the person above mentioned it.
The tapping sound is about driving me nuts. Back to diesel for heat? I was spending 400 a month for my houses heat in 2010 using diesel. Big house and old system, but the price of fuel is way more now. I couldn't imagine... I'm a farmer BTW.
Yeah that's why i put the heater outside so i can't hear the clicking sound of the pump. :D The diesel heater in this vid is only for a small studio that is fully insulated so it takes very little to heat it. Maybe 1 euro / USD per day.
I use two as back up heaters 8kw models. I have them with toyo stove type intake and exhuast. Yes that puts them inside. We primarily heat with two Toyos but at -40 or colder backups are a must. If I lose power I have them with batteries. I actually think they heat more then the Toyotomi's. Either way they will keep the house 70 F. Only draw back is tick tick tick and blower noise. I would have back up Toyo's but at $2500 each and still having to get the generator started or two for $200 and direct from a battery and the same fuel tank plus a couple fillups from a 5 gal can just in case. Yes wood is zero electricity but then I am scared to leave the house with fear the fire will burn out or worse. Being 100 miles from Fairbanks Ak I want as much backup as possible. As it turns out I like them more than the toyotomi stoves set them on low and the house stays more constant temp than with the toyotomi stoves on a thermostat. Next year they will have sound proof enclosure then I will really like them. When they break I will just buy two more and keep them as parts.
I also just bought two of these for backup heat in emergency power outages. How are you keeping the batteries charged, exactly? I have an old 3500 craftsman generator but as I’m looking into charging deep cycle a batteries for the first time with this setup, everyone’s acting like old generators are the unclean devil…assumed I could put an inverter or controlled charger on the generator and then to the battery and just have a few to swap out while charging.
For now I heat mothers apartment with air-to-air heatpump and it works grate. Electricity costs 0.25eur/kw in Latvia. Diesel 1.75+-. So cost may be the same. But I might buy that heater and try to run it on free waste vegtible oil😅 Or LPG version would be good to. LPG costs 0.60eur/litr
Thanks for your comment, i never thought of LPG. I know kerosene works perfect in these heaters and i will be using it when i have used up my older diesel i had in storage. :D
Thank you for the informative video , I really like the higher capacity tank with your diesel heater....did it come as a package or did you order seperate ?! I'd love if you could share links to where to purchase ?! Thanks alot
Thanks for your comment! The tank comes with it. It's 10 liters and lasts 2 weeks in winter for our cabin. Here are some link: EU - eur.vevor.com/diesel-heater-c_10321/diesel-heater-air-fuel-heater-8kw-planar-12v-for-car-trucks-motor-home-boat-p_010954551225?lang=en¤cy=eur&shortkey=20240417g5wg US - www.vevor.com/diesel-heater-c_10321/vevor-bluetooth-app-control-diesel-air-heater-12v-8kw-diesel-heater-with-automatic-altitude-adjustment-remote-control-and-lcd-diesel-parking-heater-for-rv-trailer-camper-van-boat-and-indoors-p_010679003839?lang=en¤cy=usd&shortkey=20240417g5wi
I believe you installed the fuel pump incorrectly. The angle is right, but the part where the electrical cable is attached should be at the highest point. At least that's how I've installed it and many others on 'the Tube'... You might have a look into this. Stay warm!!!
In theory it's about the same. Butane gas heating used to be about the same as electric at 18 cent per kwh, but it's 40 cent now and gas stayed the same. We replaced the gas heating because of all the fumes it puts out into the room. None at all with a diesel heater.
I myself have a similar diesel heater that I primarily use to heat my old basement when I'm there and working. I can also have the diesel heater when there is a power cut to heat parts of the house. One thing I object to though, you say that the electricity is produced far away and is not so efficient when it is used for heating in the home. Where is the diesel produced, how is it transported and how environmentally friendly do you think it is compared to electricity from hydropower or nuclear power? Greetings from Sweden!
Excellent! I agree nuclear power is great and fossil fuels are a major motivation for conflict, let alone the environmental cost of extraction and transit. Our house and hot water are heated using wood. Trees are the probably the only true renewable fuel source. We are going to scale up our forest garden from 2 acres to 10-15 in the near future.
interesting, I'm now thinking of one for my cabin, a question though, do you not think it would be more economical to run if the actual intake was inside the house also? I appreciate you're pulling in fresher air your way, but most buildings have vents etc to allow for air circulation so I'm not sure how much "fresher" it would be . I would also consider getting the intake as far away as possible from the exhaust, as I'm sure on some still days on start-up, you'll be able to smell it through the intake as it will waft up and pull a bit through (another reason to run it inside perhaps?)
Yes and we will run it from inside to recycle the same air, although we're really enjoying the fresh air. It's a bit of a luxury but more inefficient. We've got no ventilation. Very rarely we can smell the smoke and this is the second reason why i would run the air inlet from inside.
@@GardensforLife thanks for replying, subscription added. I did just try to order one via the website, but discontinued on uk site.. plenty of clone ones on Amazon so i might give one a whirl - for £78 its worth a punt 👍
My setup is almost exactly the same as yours on my tiny house ive had it for 3 years now yes definitely have the intake from inside the house you are lible to take co² from the exhaust blowing inside and not even know it
diesel holds energy - energy is measured in watt-hours or kilowatt hours. watts are a measure of instantaneous power, something can't "hold x amount of watts".
Wondering could you heat an entire home with one of these. 215sqm. Wondering if you could fed the heat pipe from these into a mhrv unit extraction so it heats the fresh air coming in?
I don't think a 8kwh (which is really about 4kwh) will cover a whole house sufficiently, however it would probably heat 3 rooms. Our heater is currently pulling fresh air, but i will be running a pipe from inside to make it more efficient.
@@GardensforLife the outlet should be between 15 and 35 degrees upwards to allow air to purge from the pump. Air trapped in pump will eventually lead to malfunction.
What worries me is 1) air quality and 2) fire. It takes only a few unlucky malfunctions for that diesel to burn down the house. If you're lucky you realize in time and escape
Air quality is perfect as it's heating fresh air from outside (can circulate it also) and the exhaust is outside. Maybe there's potential for safety issues, but these diesel heaters are made for camper vans and trucks and they're very reliable, unlike their unbranded counter parts. The inside of the cabin is lined with fireproof slabs.
Yes that would save probably 30% of fuel, didn't get around to it yet, however i am really enjoying the health benefits from having heated fresh air pumped into the building.
Why not have your air intake connected to the interior of your house along with your hot air exhaust? Obviously you want the heater outside for fire safety, noise, exhaust but by conditioning outside air and pumping inside you're creating a positive pressure environment and pushing all conditioned air out every crack of the house while you could just be recirculating it, using much less energy to keep it as the desired temperature.
Correct and a good idea, however it's an almost airtight building. The only place for air to escape is ironically under the door and that's ok with me as it's the coldest air in the room. To be honest our studio has always had a lack of fresh air and with this heater pumping fresh air into the building it's just a delight. We no longer have to open the door or window to wave in fresh air every few hours. It's a defo a bit of luxury, but i will circulate the air to heat it should the fuel prices become prohibitively expensive. Thanks so much for the tip! :D
The fresh air moving in prevents moisture build up and creates a positive air pressure inside the home, reducing drafts. A Y splitting in/recycling air is a way to reduce loss in the coldest months of an issue.
DO NOT INSULATE! Heat in this is design is suppose to escape. If indoors use a old twin fin radiator to join exhaust to radiator, then from the other end of the radiator exhaust to the outside. This will capture HUGE energy losses. Why PAY More!
No smell or fumes inside at all, only fresh hot air coming through the pipe. I didn't get any smell outside either though. If you install the heater inside, just make sure the exhaust is leading outside and there are no leaks.
Buy your Diesel Heater here: EU - eur.vevor.com/diesel-heater-c_10321/diesel-heater-air-fuel-heater-8kw-planar-12v-for-car-trucks-motor-home-boat-p_010954551225?lang=en¤cy=eur&shortkey=20240417g5wg US - www.vevor.com/diesel-heater-c_10321/vevor-bluetooth-app-control-diesel-air-heater-12v-8kw-diesel-heater-with-automatic-altitude-adjustment-remote-control-and-lcd-diesel-parking-heater-for-rv-trailer-camper-van-boat-and-indoors-p_010679003839?lang=en¤cy=usd&shortkey=20240417g5wi
80% lost in the distribution of electricity. Nonsense, please show your figures. It would be impractical and dangerous as a 1MW source would loose 800KW in the wires to the home, think of that as heat! There would be fires and melting insulation underground. sorry more like 5-7% given an iron aluminium alloy for the cables and a very high voltage for the super-grid and slightly lower for the main body of the grid. Also 140W from a 12-13V battery is 10-11Amps at 140W. Get thicker wire for the connections to the heater, also they tend to consume about 3-5Amps continuous on high. so would flatten a car battery in 24 hours, you would need a bigger battery and a big solar panel to charge it. Greetings from Mayo.
I did the radiator trick i have a setupnin my garage :) that works ;) exaust are ice cold
Well done! Get the most out of it :D
Anxiously waiting on mine. I figured instead of a battery, I’m doing a 120v to 12v adapter. I can’t wait to give it a try.
We've got a trickle charger at 3 amps hooked up to the battery and it's not quite enough on the coldest days, but the battery is handy when the electricity is out for a day.
An old power supply for a desktop computer works great... You can get the connector adapter for a clean install, or just cut off the connectors and wire directly with an inline fuse of course...
I also have DeWalt flex volt 20/60 volt tool batteries and use an adapter for the battery wired to a step down converter that drops the 60 volts down to the required 12 volts ... A 5AH tool battery will run the heater for 5-6 hours depending on the settings... I installed an extra battery adapter, so when the first battery gets low, you can add a battery then remove the low battery to recharge all the while keeping the heater operating without shutting down and restarting...
Hi, it’s best not to lose the power and cool it down properly. Overheating the mother board is not a good idea. If you want to instigate a low voltage cut off have a relay drop out the pump circuit and it will go into shutdown and cool down.
Videos on Yt for this.
Take care M.
Warm air in canisters at 10:44 - great idea! XD
Haha :D
You may want to think about a Y, pull some air from outside and some from inside. This inside one could be a smaller intake. Just a thought to get mre heat and still have fresh air.
True that, defo would be advantages during the coldest months. For now it's still doing a great job and it doesn't take that much to bring the studio up to temperature. Thanks for your comment!
Been heating my home with a Chinese diesel heater for 5 years. Very economical. I do not mind the sounds that it makes when the air outside is cold.
Excellent! What size of tank are you using? I'm going to install a swappable 20 litre canister. Thanks for leaving a comment :D
@@GardensforLife Five gallon. I don't know how many liters though. Sorry.
Great video first time meeting you. Cheers Rob
Thanks for leaving a comment!
I had one of these in my mobile home it was so effective. Great video
Good idea, never thought of that. Would work great for a caravan as well.
With the heating costs in Germany, i'll probably install one for my small home apartment lol
Great job! I used electricity and gas before in the studio, now with the diesel i use kerosene and it's cheap. 10 liters every 2 weeks (12 hours per day) for a 10 sqm space and fresh air :D
If you want to save money you need to more efficiently install your diesel heater. The way you have it now you are heating outside air. You should heat inside air just as a 'normal' home furnace does. The diesel heater can put a finite amount of heat into the air stream running through it. Therefore if the outside air temperature drops 10 degrees so will the heated air expelled by the diesel heater. Run a second duct from the air intake (not the combustion air intake) to the inside of the home.
Thanks for your comment! Much appreciate your advise. The we've set it up is definitely a bit of a waste, however we love the fresh air it provides and it takes very little to heat the studio. It's well insulated and almost air tight, so fresh air has always been a struggle. Until now :D
You could use a battery charged from the heat produced via a thermocouple.
Cool, i didn't know you could do that. Will look into it. Thanks
looks good...I would build a small roof over the heater.
Yupp thanks, we are in the process :D
Check glow plug and hard fuel line grommet in heater no air gaps or it smells of plastic. Needs weather protection or ecu boards rot as not encapsulated
Thanks a mill, will do
@@GardensforLife future video idea- (because I do not know how) how to encapsulate the electronic board correctly or worthy since the person above mentioned it.
Love this video as well as the rest. I would like more home steading videos nice work.
Thanks so much! Will do
The tapping sound is about driving me nuts. Back to diesel for heat? I was spending 400 a month for my houses heat in 2010 using diesel. Big house and old system, but the price of fuel is way more now. I couldn't imagine... I'm a farmer BTW.
Yeah that's why i put the heater outside so i can't hear the clicking sound of the pump. :D The diesel heater in this vid is only for a small studio that is fully insulated so it takes very little to heat it. Maybe 1 euro / USD per day.
Perfect
I use two as back up heaters 8kw models. I have them with toyo stove type intake and exhuast. Yes that puts them inside. We primarily heat with two Toyos but at -40 or colder backups are a must. If I lose power I have them with batteries. I actually think they heat more then the Toyotomi's. Either way they will keep the house 70 F. Only draw back is tick tick tick and blower noise. I would have back up Toyo's but at $2500 each and still having to get the generator started or two for $200 and direct from a battery and the same fuel tank plus a couple fillups from a 5 gal can just in case. Yes wood is zero electricity but then I am scared to leave the house with fear the fire will burn out or worse. Being 100 miles from Fairbanks Ak I want as much backup as possible. As it turns out I like them more than the toyotomi stoves set them on low and the house stays more constant temp than with the toyotomi stoves on a thermostat. Next year they will have sound proof enclosure then I will really like them. When they break I will just buy two more and keep them as parts.
I also just bought two of these for backup heat in emergency power outages. How are you keeping the batteries charged, exactly? I have an old 3500 craftsman generator but as I’m looking into charging deep cycle a batteries for the first time with this setup, everyone’s acting like old generators are the unclean devil…assumed I could put an inverter or controlled charger on the generator and then to the battery and just have a few to swap out while charging.
Great video! Thanks!
Thanks!
How hot does the heat outlet get ? What type of hose is used from there into the room?
This was a great video! 👍🏾
Thank you
Well done, it is a great heater, thank you
No bother, Thanks for leaving a comment :D
For now I heat mothers apartment with air-to-air heatpump and it works grate. Electricity costs 0.25eur/kw in Latvia. Diesel 1.75+-. So cost may be the same. But I might buy that heater and try to run it on free waste vegtible oil😅 Or LPG version would be good to. LPG costs 0.60eur/litr
Thanks for your comment, i never thought of LPG. I know kerosene works perfect in these heaters and i will be using it when i have used up my older diesel i had in storage. :D
Btw electricity is 40 cent per kwh here in ireland.
Thank you for the video.
No bother, thanks for your comment!
Curious if I can vent the heat directly to the duct work of my furnace
Shouldn't be a problem as long as the hot air from your furnace doesn't end up coming out of the diesel heater when it's turned off.
Thank you for the informative video , I really like the higher capacity tank with your diesel heater....did it come as a package or did you order seperate ?! I'd love if you could share links to where to purchase ?! Thanks alot
Thanks for your comment! The tank comes with it. It's 10 liters and lasts 2 weeks in winter for our cabin. Here are some link: EU - eur.vevor.com/diesel-heater-c_10321/diesel-heater-air-fuel-heater-8kw-planar-12v-for-car-trucks-motor-home-boat-p_010954551225?lang=en¤cy=eur&shortkey=20240417g5wg
US - www.vevor.com/diesel-heater-c_10321/vevor-bluetooth-app-control-diesel-air-heater-12v-8kw-diesel-heater-with-automatic-altitude-adjustment-remote-control-and-lcd-diesel-parking-heater-for-rv-trailer-camper-van-boat-and-indoors-p_010679003839?lang=en¤cy=usd&shortkey=20240417g5wi
@@GardensforLifethank you 😊
I believe you installed the fuel pump incorrectly. The angle is right, but the part where the electrical cable is attached should be at the highest point. At least that's how I've installed it and many others on 'the Tube'... You might have a look into this.
Stay warm!!!
It seems to work fine, but i will certainly check into it. Thanks very much! :D
is it cheaper than running a gas combi boiler?
In theory it's about the same. Butane gas heating used to be about the same as electric at 18 cent per kwh, but it's 40 cent now and gas stayed the same. We replaced the gas heating because of all the fumes it puts out into the room. None at all with a diesel heater.
I myself have a similar diesel heater that I primarily use to heat my old basement when I'm there and working. I can also have the diesel heater when there is a power cut to heat parts of the house. One thing I object to though, you say that the electricity is produced far away and is not so efficient when it is used for heating in the home. Where is the diesel produced, how is it transported and how environmentally friendly do you think it is compared to electricity from hydropower or nuclear power?
Greetings from Sweden!
Excellent! I agree nuclear power is great and fossil fuels are a major motivation for conflict, let alone the environmental cost of extraction and transit. Our house and hot water are heated using wood. Trees are the probably the only true renewable fuel source. We are going to scale up our forest garden from 2 acres to 10-15 in the near future.
interesting, I'm now thinking of one for my cabin, a question though, do you not think it would be more economical to run if the actual intake was inside the house also? I appreciate you're pulling in fresher air your way, but most buildings have vents etc to allow for air circulation so I'm not sure how much "fresher" it would be . I would also consider getting the intake as far away as possible from the exhaust, as I'm sure on some still days on start-up, you'll be able to smell it through the intake as it will waft up and pull a bit through (another reason to run it inside perhaps?)
Yes and we will run it from inside to recycle the same air, although we're really enjoying the fresh air. It's a bit of a luxury but more inefficient. We've got no ventilation. Very rarely we can smell the smoke and this is the second reason why i would run the air inlet from inside.
@@GardensforLife thanks for replying, subscription added. I did just try to order one via the website, but discontinued on uk site.. plenty of clone ones on Amazon so i might give one a whirl - for £78 its worth a punt 👍
My setup is almost exactly the same as yours on my tiny house ive had it for 3 years now yes definitely have the intake from inside the house you are lible to take co² from the exhaust blowing inside and not even know it
Thanks! The air quality has been excellent in our little studio since we've got it, but you're right i will look into doing that. :D
Very impressed with this Martin, where would you buy this in Ireland? Also how much approx?
Here you go: eur.vevor.com/diesel-heater-c_10321/diesel-heater-air-fuel-heater-8kw-planar-12v-for-car-trucks-motor-home-boat-p_010954551225
Anything on generators?
diesel holds energy - energy is measured in watt-hours or kilowatt hours. watts are a measure of instantaneous power, something can't "hold x amount of watts".
That would be the proper way to describe it. Thanks :D I just simplify things in my own head.
1688 code and you can adjust all settings in menu, set it for 3kw or 8kw.
Thanks for that! :D
You need a safety bracket on the exhaust. An animal could hit the pipe and make it touch the building possibly.
Good idea, thanks!
Wondering could you heat an entire home with one of these. 215sqm. Wondering if you could fed the heat pipe from these into a mhrv unit extraction so it heats the fresh air coming in?
I don't think a 8kwh (which is really about 4kwh) will cover a whole house sufficiently, however it would probably heat 3 rooms. Our heater is currently pulling fresh air, but i will be running a pipe from inside to make it more efficient.
@@GardensforLife true, thanks for the input
You don´t need to have the fueltank above the heater, you have to install the pump in a correct angle.
Thanks! I assumed the angle is to gravity feed the fuel. What else could it be for?
@@GardensforLife the outlet should be between 15 and 35 degrees upwards to allow air to purge from the pump. Air trapped in pump will eventually lead to malfunction.
What worries me is 1) air quality and 2) fire. It takes only a few unlucky malfunctions for that diesel to burn down the house. If you're lucky you realize in time and escape
Air quality is perfect as it's heating fresh air from outside (can circulate it also) and the exhaust is outside. Maybe there's potential for safety issues, but these diesel heaters are made for camper vans and trucks and they're very reliable, unlike their unbranded counter parts. The inside of the cabin is lined with fireproof slabs.
no mention of the high cost of these heaters, Martin?
I only paid 120 euro. The german branded version is 900.
Better to have recirculation on air inlet.
Yes that would save probably 30% of fuel, didn't get around to it yet, however i am really enjoying the health benefits from having heated fresh air pumped into the building.
Why not have your air intake connected to the interior of your house along with your hot air exhaust? Obviously you want the heater outside for fire safety, noise, exhaust but by conditioning outside air and pumping inside you're creating a positive pressure environment and pushing all conditioned air out every crack of the house while you could just be recirculating it, using much less energy to keep it as the desired temperature.
Correct and a good idea, however it's an almost airtight building. The only place for air to escape is ironically under the door and that's ok with me as it's the coldest air in the room. To be honest our studio has always had a lack of fresh air and with this heater pumping fresh air into the building it's just a delight. We no longer have to open the door or window to wave in fresh air every few hours. It's a defo a bit of luxury, but i will circulate the air to heat it should the fuel prices become prohibitively expensive. Thanks so much for the tip! :D
The fresh air moving in prevents moisture build up and creates a positive air pressure inside the home, reducing drafts. A Y splitting in/recycling air is a way to reduce loss in the coldest months of an issue.
DO NOT INSULATE! Heat in this is design is suppose to escape. If indoors use a old twin fin radiator to join exhaust to radiator, then from the other end of the radiator exhaust to the outside. This will capture HUGE energy losses. Why PAY More!
Thanks for your comment. There's no radiator with this heater, it's just hot air blowing into the building via the 3 inch duct.
@@GardensforLife he's suggesting to install a radiator inline with the exhaust to capture waste heat
Guess it never rains there.
Link to the product please?
eur.vevor.com/s/diesel-heater
Does it smell?
No smell or fumes inside at all, only fresh hot air coming through the pipe. I didn't get any smell outside either though. If you install the heater inside, just make sure the exhaust is leading outside and there are no leaks.
You can support us on Patreon www.patreon.com/BirdlandHomestead Thank You! We appreciate it very much!
Buy your Diesel Heater here:
EU - eur.vevor.com/diesel-heater-c_10321/diesel-heater-air-fuel-heater-8kw-planar-12v-for-car-trucks-motor-home-boat-p_010954551225?lang=en¤cy=eur&shortkey=20240417g5wg
US - www.vevor.com/diesel-heater-c_10321/vevor-bluetooth-app-control-diesel-air-heater-12v-8kw-diesel-heater-with-automatic-altitude-adjustment-remote-control-and-lcd-diesel-parking-heater-for-rv-trailer-camper-van-boat-and-indoors-p_010679003839?lang=en¤cy=usd&shortkey=20240417g5wi
You're funny....guys don't ask for directions on the road or use manuals.
Hah in this case it was straight forward enough. The manual is written in very confusing english and isn't of much use anyway. :D
Your pump is upside down
Yes, gravity assisted :D
80% lost in the distribution of electricity. Nonsense, please show your figures. It would be impractical and dangerous as a 1MW source would loose 800KW in the wires to the home, think of that as heat! There would be fires and melting insulation underground. sorry more like 5-7% given an iron aluminium alloy for the cables and a very high voltage for the super-grid and slightly lower for the main body of the grid. Also 140W from a 12-13V battery is 10-11Amps at 140W. Get thicker wire for the connections to the heater, also they tend to consume about 3-5Amps continuous on high. so would flatten a car battery in 24 hours, you would need a bigger battery and a big solar panel to charge it. Greetings from Mayo.