Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: would this work for a semi?
Document: heater works great and was easy to install. I would buy another one.I put it in a skidsteer loader and it keeps me toasty warm.
I'm sure the 24v one they offer that is supoto put out 20000 btu's would be more like the Mr Buddy heater. And do a far better job of heating my cab. But as it stands. The btu's are not as they advertise.I do get to test this quite regularly during the winter. So far. The closest day I've tested it on was a -10 degree cloudy day. And all the temps on up to +50 degrees. Cloudy and sunny days.
You can cut that inhalf by using 4gauge wire at the same length. Now 4% dosent sound like much. That would rase it to 52 amps an hour instead of 50. But once you take in your battery storage or battery capacity amp hours. That will add up fast. What's more is regular lead acid battery's only hold about 80% of what they say they do. So a 100 amp hour battery will really only hold about 80 amp hours. Now.
Room temp makes a huge difference. I've found that the colder it gets the better a battery holds it's charge. Now. The colder it gets when you start to drain the battery. It drains faster. It's rather odd. They hold a charge the best in the cold. But drain the fastest in the cold. So. The best temp for a battery would be from 30-70 degrees. There even ok from 10-30 degrees. But once you start going colder than that.
Let's see. Where to start. Ok. This 12v heater claims to put out 10020 btu's. I would have to say that it's half that at best. If I had to guess. It's more like 4000 btu's. On high. On low. I'd say it's about 1200 btu's. My saying this is because when compared to the single propane canister Mr Buddy heater that is 4000/9000 btu's. The 12v heater on high only feels like the Mr buddy on low. When used to heat the same sqft.
Was the out side temp.When choosing heaters like this. Many things comes into account. Each recharge of the battery's was done with an automatic smart 0-15 amp deep cycle battery charger. It's the same kind of tech that's used to charge your cell phones. Rapid charge when it's low. And backs off on the charge as the battery's charge lvl rises. Until it's fully charged.Over all. I love this heater. And I would love to experiment with the company's largest one.
I bought this heater to add some well needed heat for my Dodge Ram 1500. I've had heat issues for several years with my truck and instead of spending thousands of dollars at the Dodge dealership &#34;exploring&#34; the potential problems I thought I would try a cab heater. This little machine is worth every penny, I live in N.Ontario and our winters are brutal and this thing puts out heat fast and hot.
item performs exactly as described. works well with remote switch and relay, unfortunately I now have to get a larger alternator
That's how long I've been testing it for.Now the positives. When used to heat a much smaller space, like the space of 5-10sqft. Or under a blanket that your covered up in. It works great. Since it can't heat the hole cab like I want it to. I've resorted to having it down by my feet and my hole body under a twin sized blanket with it blowing heat in the blanket, even recycling that same heat. Under that blanket. It's an easy 85 degrees.
Love it. Very happy.
Answer: no