hijinks t1_isd4txs wrote on October 15, 2022 at 1:22 AM

If you are looking to add a second battery like overlanders do, if you do it wrong you risk destroying your computer which can be very pricey.

FUCKPUTIN2022LOL OP t1_isd57tx wrote on October 15, 2022 at 1:26 AM

The battery would actually be more for lighting and or a heater/AC. That's why my wattage threshold is so high. Even low wattage ones draw like a mf

UntakenAccountName t1_isdbjzs wrote on October 15, 2022 at 2:18 AM

Running heat/AC off of batteries feels unrealistic to me. What will you be charging them with?

FUCKPUTIN2022LOL OP t1_ise9icv wrote on October 15, 2022 at 8:50 AM

Solar. Anywhere from 1000-2500w depending on budget. The general idea is tiny home+super insulation+ small heater and AC. I'm aiming for the completely unrealistic effort of a 250w heater and ac. (Not combined) that's why I'm aiming for 300w, so I can run either max power (low-power max power you will) and still be "good". The rest of the power will be stored for fridge, lights, etc. (The general basic WH/T variable shit I get, just not conversions because my autismo brain goes brrrr)

John-C137 t1_iseawne wrote on October 15, 2022 at 9:11 AM

For heating and cooling I'd recommend something like a diesel parking heater or a gas powered AC unit. Mate I think what you have to take away from this thread is your initial fact finding mission was a success. You found the initial project is a dangerous, expensive and just the wrong application for what you want to achieve.

FUCKPUTIN2022LOL OP t1_isebnnj wrote on October 15, 2022 at 9:22 AM

Except it's literally how tesla builds their cars. Their batteries are built literally with 18650 or 32650 cells. I realize it's dangerous (I mean electricity and fire are lol) but it's not like I wouldn't be using spacers and proper wiring. (I did forget to ask about gauge of wiring) I want full electric. I'd rather not destroy and pollute more than we already do. I mean, we have a giant nuclear constant reactor in the sky and we burn old dinosaurs instead. K.

throwawhatwhenwhere t1_iseem1l wrote on October 15, 2022 at 10:05 AM

> Except it's literally how tesla builds their cars

Yeah dude no. You're not qualified to do this and it will go wrong.

John-C137 t1_isef774 wrote on October 15, 2022 at 10:14 AM

Tesla also have spent millions of dollars and had teams of expert engineers design their manufacturing process, test procedures and quality control. For example they will have dialed their spot welding down perfectly so the cells won't be heat damaged but still have a low resistance connection, can you really say you can hand solder hundreds cells with no I'll effect to the cells? I could go on about batteries and UPS's all day, is a real iceberg of a subject.

Good on you for going all electric and have an interest in renewable energy. Save yourself some pain and start at the start, work out your requirements using leisure or marine batteries, design and assemble your own charge system using available parts and research DC power systems and batteries as you go. Starting simple will help you develop the skills and techniques to go on to more ambitious projects in future.