I’ve made enough progress to make a video one it: Boost Charging with the Gen 2 Prius Inverter


I’ve also now got a cooling system, so as soon as I can run the battery down a bit, I can try to do some more tuning.

Great :)
You can find some parameters here. Unfortunately the frontend puts most of them into "Regen" :?
https://openinverter.org/parameters/view.html?id=29



Ah! I’d looked at that, but didn’t see the relevant parameters under charge, but I see them cleverly hidden now.
I need to get some of my ...

I’m charging!!!!!!!! (Negative pack current on the bms means power is flowing in). I’m using a 1.4kw charger, so 100% efficency would give me about 3.5a at the pack, so I’m hoping I can tune it a bit better.
I went back and watched Johu’s parameters video last night and when he got to charging ...

The good news is the needing the pull up was the part I didn't understand. I added a 470R (because that's what it said various places in the wiki and forum and I couldn't find a 1k). And now I have signs of life.

The bad news is they aren't very healthy signs of life. If I plug in the charger with ...

I'm pounding my head against the wall. I've read through the forum, I've read through the wiki. I've hooked 12v to CSDN via a 470R resistor and also tied it to DCSW. I can get the converter to shut down at start up, but once the DCSW pulls it down, it's still bouncing between 350v and 400v. I've set ...

huh. I'm also not getting output from my DC-DC converter. I swapped in the converter from my other inverter with the same results. some clicking, but it doesn't seem to be working.

Edit so I’m not just replying to myself: I went back and checked my wiring (and soldering) and I have good continuity ...

dang, I was hoping it would be simple.
I checked to make sure I was getting power into the inverter- I have AC voltage going into the rectifier, and dc coming out (if it's disconnected from the inverter). With everything hooked up, I'm seeing the low side of the buck/boost cycling between ~350V and ...

I've got a 100s pack, so I decided to give it a go. I've got everything wired up (including my charge port!). But when I plug it in, I'm not getting any current to the pack, and just a slight rhythmic click from the buck/boost converter.
I'm wondering if I need to run through the other current ...

Reporting back....I gained access to the MG1 current sensors, and ran a piece of wire though them, hooked it up to my benchtop power supply, and ran varying amounts of current though it to see what it would do. Put the inverter in boost charge mode and got some really odd numbers back. I've attached ...

I’ve got a junk (water damaged) inverter that I had previously tried to pull oen of the current sensors from, and it was a bit of a dead end for me. It would be tough to get it out without destroying the inverter, it has 5 pins on it and the only one I can identify is the ground. The only markings ...

Ok, I think I’ve got a plan, opened up the inverter and then realized I’m not 100% sure how the current sensor gets hooked up.

My understanding is GIWA and MIWA share an input, as so GIVA and MIVA. Does it matter which one I connect to?
And also a question on the burden resistor- I assume this is ...

I finally got my BMS back from Ewert, got everything hooked up and drove around the woods a little bit yesterday, so I’m back to thinking about adding a charging system. I had a couple more questions, but in sitting here writing them, I realized I was misunderstanding where the current sensor goes ...

I'm inching closer to doing the charging side of this on my build (once I get my BMS actually working...) and I naturally have a ton of questions. I'm planning on documenting it all in video form and can take a stab at writing it up for wiki if i manage to figure it all out.

I'll stick to one ...

johu wrote: ↑Wed Sep 10, 2025 8:19 am Lets see what happens

I was still having trouble logging in, then I found this thread. I'll send you my log and har via PM in the hopes you can find something

I broke the first rule of EV club and started out with a rust bucket (though “bucket” is giving it too much credit. But A friend of mine said if I drug it out of his woods, I could have it. It had been sitting there since he bought the place 30 years ago, and the last registration sticker was from ...