Recent content by sunrise

Looks like you are making great progress. Wondering if you actually need to offset the stool all the way to one end? is it possible to make it 'thinner' + carve the base a little to make room for the stud base?

Are you recommending a different brand? Or different type of breaker? I could not find a ‘real dc breaker’

Very nice work, @bryn I can definitely appreciate the hard work behind this, as I went through this process just a couple of years ago. Some feedbacks - 1. I noticed the section of rod tunnel is square, there are 2 downsides of this - a) it uses more material, takes longer to print, without...

I do want to use a fuse because the manual reset breaker also serves as the true kill switch for storage. I do have a beefy 300A switch but that one doesn't disconnect propane/co detector and trailer brake， for safety reason. when I put the trailer in storage/winterization, I charge the battery...

it's significantly warmer, You can still touch it, I think it was about 50-60c

This is the one that I use. https://www.amazon.com/gp/product/B06Y454WHC/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

+1 on this. I could have move the battery to post axle, so it can be placed right next to inverter. but that changes weight distribution and I don't want that.

I want to give an update on this. as I promised when I started this thread. First I did make a mistake, I thought 2 4awg wires = 1 2awg wire. I probably got this wrong idea from nail gauges, for which the width is what matters, but for wires, it's the area and 2 4awg wires are equivalent to a...

I ran 2000w inverter with 13500btu AC unit, at 185a for about 15minutes, no heat at all, I used a temp gun to read every conductor inside and outside the battery. The only thing got fairly hot was a 250a breaker.

I built mine (12v 304ah, 4s, 200A JBD BMS) with TEMCo 1 awg wire, works great with 2000w Renogy inverter. I do run 2/0 awg from battery to inverter though. I only run about 6" 1 awg wire total inside the battery, the JBD 200A layout makes wiring very easy. I think 1 awg actually gives pretty...

So in that case, just play with the parameter won't help as it's outside the range that parameter was designed for . However you can ask your son to adjust the design by doing one of the following 1. narrow the stool the firewall sits on, it doesn't need to be that wide. I think 8-10mm should...

You need to adjust this parameter. looking at you picture, seems like the 'stool' on which the FR4 firewall sits needs to be narrowed a bit. Hope this helps.

Looks great!

The Fustion 360 file I included is fully parametric, your son should be able to change the new cell dimension with a few clicks. see the screenshot below.

There wasn't much special slicer settings, 0.2mm layer height, 15% infill. There are 2 things I'd recommend 1. You will need to have your extruder stepper calibrated. I have done many, many smaller prints in past 2 years and never had any issues. but when I print the first battery cell section...