The Best Battery Enclosure looks like this?! (Self-Heating)

Best practice is to use fire resistant materials for battery boxes, usually metal. For DIY, you can use cement fiberboard to line the inside of the box to create a safer barrier.

I found a mirror heater (to prevent mirrors steaming up in the bathroom) is ideal for warming and drying photographic prints. It takes about 20 watts at 230v. It already has mains connections and is fully insulated so easy to use for warming projects. Second idea - use a dead fridge or freezer if you can find one minus the compressor etc. from a recycling centre. It’s a box that’s already insulated!

Please do something with those terminals. Right now if you in a moment of absent mindedness put something metal on top of the box you could short out those batteries. I'm sure you've fused it internally etc but it would be easy to put something taller than the termnals between them so a misplaced tool couldn't bridge them.

6:40 when using the band saw, please keep the guard a maximum of 6mm above the work piece to keep your fingers safe

One problem I can immediately see is that you might want to install some controllable ventilation just in case. The batteries can get warm while charging, but if the insulation is too good, they might start to overheat.

I like your idea with the temperature controller. Its simple and fast. But please use a fuse or motor protection switch. If the heater resistance goes down, the fuse cuts the power instead of increasing the heater power and generate a fire hazard.

Just a suggestion. You can cover the two poles with caps in order to electrical-isolate the poles, so that it won't cause short circuit if something touches both of the power poles accidentally. For example: put a random metal ruler on the box.

4:45 Love the old fashioned folding rule. Haven’t seen one in decades. Instead of the mat and soldering mains wires, I might have considered a 40 Watt incandescent bulb and off the shelf socket. Great video.

Ein paar Kritikpunkte: Die Kabine ist nicht gerade Feuerfest, was ich für ein Batterielager anraten würde. Eine Auskleidung mit einem feuerfesten Material hätte ich besser gefunden. Eine einzige Fermacellplatte hätte wahrscheinlich schon gereicht und ist billig. Die (anscheinend blanken) Anschlüsse durch das Holz und die Mineralwolle finde ich auch nicht gerade sicher. Kommt da mal Wasser drauf, startest du ne Elektrolyse. Ich glaube zwar nicht das es direkt zu einem Brand kommt, aber zumindest ruinierst du dir die Anschlüsse und evtl. sogar die Batterie. Und die blanke Anschlüsse oben drauf laden gerade dazu ein mal ne Blechkiste drauf zu stellen🤣 Sorry für soviel Kritik, aber die Menge an Energie in der Kiste ist nicht zu unterschätzen und du möchtest dein Haus und deine Familie sicherlich behalten....

I was actually expecting a small chamber for yourself🤣 It would honestly be a pretty cool project as an emergency micro shelter or something, with proper ventilation and filtering, etc.

You could also use an old refrigerator for the box. I don''t know whether your batteries degrade when they get hot, but you may be able to make use of cooling sometimes. It's gotten up to 46° C (115° F) where I live. Probably just run the cooling off mains for those rare situations. It may be sufficient to simply open the door at night to let things cool, then close in the morning. I know it's not in the spirit of automation, but it works.

Something to maybe keep in mind would be something like a air quality meter inside the chamber if for some reason something goes wrong with the batteries. Otherwise great project idea.

I recently did something similar but for cold with an old refrigerator. I used an STC-1000 that I bought on Amazon as a thermostat. This device has two relays, one for cold and one for heat... that is, one that is activated when the temperature drops below a limit and another when it rises above another limit. In addition, it has programmable temperature alarms in both cases and comes prepared to fit in a rectangular hole... it can fit very well and cleaner in your box.

Be interesting to find out if the batteries give off enough heat once put online to maintain temp in the box. Please keep us updated.

Really good idea. Personally i would have put the terminals and the control unit on the side. So the top can be used as a work surface / bench-top. Can never have too many work surfaces !.

I would add an inline temperature switch for the heater cable in case the relay fails short. 20or 30°C bimetallic switch should do the job, just keep in mind they aren't very accurate and can have a large hysteresis. Also would have an over temperature alarm for it

I discovered it's actually very easy to make your own heated clothing by weaving some carbon fibre tow into pads, and directly applying 5V from a battery bank, then sewing the pads into your clothing. You want to make sure the strands are long enough to not get too hot of course, I did some testing a bit back and as far as I can tell, if you damage part of the tow, it actually makes it cooler rather than that part getting hotter than the rest. You should definitely look into that as a project

One change I would have made, I would have added mylar or some sort of reflective material behind the heating elements. Without doing that, you’re basically just heating the wood behind it. Adding reflective material will also help use less energy also.

GreatScott has invented the Lithium battery oven / cooker. GOOD JOB!

You could have used your Cerbo GX on the wall behind the battery box to do the switch on/off of the heating element with its relay output and Temperature sensor. This would also allow you to monitor the internal temp on the VRM Portal. Maybe another video on how to set this up!