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Yep. Every Boyscout used to learn to never set up a tent under clear sky, it it was possible to have a tree overhead, and you'd be much warmer.

Sorry. But you're just not correct. You are assuming that heat transfer through air molecules is the only heat transfer, and you're wrong. Everything radiates heat... many things will also reabsorb the same amount of heat through conduction, convection, etc. Making ice in a thermos, open to...

This thread is turning into an enjoyable engineering-fest ;)

Nor made ice in desert as a kid in that common experiment, nor seen frost on their windshield in morning when above freezing! Heat transfers many ways, not just convection through air molecules. Windshields frost up because they radiate heat out at night towards black sky, almost absolute zero...

1. In automotive and vibrating applications, you should be crimping, NOT soldering. 2. Use an actual crimper designed to crimp anderson connections. 3. Here, watch this:

Gotcha. Everyone always has different needs we forget about that don't match ours ;) I just want to keep battery above -20C, so I can get diesel heater started when needed... then allll my heat issues are gone. 10 min after firing up my heater, I could solar charge if desired, but I...

Ahh yah, typo, 0C ;) Renogy batteries, that explains it... what a poor design choice they made there. Well, it's a poor design for what we are discussing, and absolutely the wrong battery heat design. But there are other ones. Most self heated battery I have looked at don't require input to...

Uhm. Interesting, but it makes me want to say that your engineered solution is obviously insufficient to the task? The whole purpose of self heated setup is that the battery stays warmer than the 0f charge cutoff, at all times. Not to warm up above that the next morning. It doesn't really...

What @klahanie said. 40A charger gives 20A to each parallel battery. Also... you see what I meant about providing info in your post, not keeping secrets from your helpers? I wasted all my time typing out loads to convince you 100A wasn't enough. If you were a neighbor, I'd probably stop...

Thx. That looks decent, 269 about right for heated bluetooth. 100A bms, all looks pretty standard. I myself would go with more battery. That is just 1280Wh, probably 1200 usable, you don't want to drain to bms shutdown. 45W fridge, 24 hrs= 1080Wh 60W LED lights, 5 hrs, 300Wh Diesel heater, 30W...

Lots of reasons folks might. Maybe not all apply to a travel trailer guy. But you're right, it is a good backup to solar. Here are a few for me: 1. Arizona, hot... if I don't camp in the shade, my truckbed camper will be 120F, fast. So fixed solar isn't a strong option. 2. Mobile solar...

Uhmm... I'm gonna say disregard this, look at battery specs. Recommended charge is all about cell balance and battery longevity, not battery catching fire. I wouldn't make a habit of charging at 1c, but most allow a continuous 1c rate. There are some design best practices and standards, how...

The question is the Max Charge rate, not recommended, should be around 1C, 100A. Then most will recommend a slower rate, but can do faster. A 100Ah LFP battery today should in general have a BMS allowing 100A discharge. That is called 1C, its max discharge rate, you use this to decide what it...

Everyone who has ever bought a dc2dc charger has tried this, you are on the right path. All successfully. Many are finding they no longer need solar. There are probably 1000 threads on this at various forums including this one. And 10,000 youtube videos. Here's my recent one using Pecron car...

I Don't allow embed YouTube video, you have to go and watch It on YouTube. The reason is because I have all sorts of information in the video description and if people watch it here, they inevitably ask all the questions that I already answered and spent a lot of time typing up in the video...

Just to round things out, here is the microwave water boil power test. For smallest microwave, for overland cooking. Energy to boil 500ml water, about 2c, in Watt-hrs. Compared to Induction with small pot, and electric kettle. This is useful for people using battery power when cooking...

Good info. Where did you put your fuel pump again, to reduce noise? I bought a 15L skinny tank to put in similar spot you did, but it juuuust doesn't fit by a wee bit :( Now I'm looking at a 3gal spun aluminum diesel tank to rear mount like a propane bottle. I posted on Tune site today about...

Powerstation Charging Options. We get a lot of questions on how to set up a powerstation for charging, in a truck camper. Particularly using an LFP as an inexpensive expansion, what cables need to be swapped around, alternator vs solar cable setups, etc. I made this video showing all ways I...

Here is a video I actually made today, testing energy used for reheating 1 meal 1 person, induction cooking. Just to help with some Watt-hrs baseline usage. I actually have a series Im editing, with electric kettle, and small microwave. All based on truck camping using powerstation or...

I have the mini Redodo 12v 100Ah. Smallest size of any 100Ah so far. Ive been happy with it. Have tested its capacity 3 or 4 times now from 100% down to zero/shutoff, have always gotten the full 1280Wh, or slightly more. Not super accurate measurement granted, as I use it to refill my Pecron...