Search results

The limit is the 12V regulator the eGolf has in place of an alternator. I never found specs for it, and the limits I have tested are in this thread.

Sorry for necro-posting but this thread seems like my best chance of getting a knowledgable answer: First an update: On a 2016 SEL with a Pixel 2, Android Auto "just worked" yesterday. I didn't do anything special, just plugged in the USB cable in my garage, the phone auto-downloaded Android...

Re wire size: 5ft 4ga would be fine for 100A. When you do it, run it for 30min and see if the wires feel very warm, then you have a problem. I doubt you will though. I don't think any of us know if the e-Golf's DC-DC regulator (the thing that keeps the 12V battery charged, serves the same...

If you want to geek out on the hardware side a bit and still get some data, have a look at OpenEVSE: https://store.openevse.com/ Some idea of what the data looks like is here: https://openevse.dozuki.com/Guide/OpenEVSE+WiFi+%28Beta%29/14

Does the VW on-board charger only balance cells near 4.2V? This doesn't have to be true with Lithium batteries. A charger (not the EVSE, the actual on-board charger) can balance the cells any time it wants. I've seen chargers that can be setup to keep cells balanced thru the entire CC and CV...

If you don't have much experience with batteries, electronics, and this sort of thing. Then I would recommend you don't do this. If you do decide to anyway, please re-read my warning from the first post: WARNING: Be careful! Lots of things can go wrong here. If you're not comfortable with some...

Link to the model you have?

My impression is that this is sort of a solved problem for folks who often want to use generators to feed things in the house. If money is no object, you can get pretty fancy "transfer switches" automatic an will let you switch individual circuits in your house so that only those are live from...

As I understand it (not sure though) the charge port and wiring leading to the onboard charger is specifically designed so you can't get power out of it. It's a safety thing.

I'd like to hear how long you run it this way and how much power you pull.

Exactly! If I see >13VDC with a multimeter, I assume I'm not drawing from the battery. Although I realized I really should check the voltage of the the 12V circuit with car in fully "on" mode (i.e ready to drive away, but still in park). Hopefully it isn't different, we'll see. UPDATE: When car...

I think changing "the fuse" position only keeps the 12V power ports (cigarette ports) on full time? Don't know. What I did was: - Foot off brake, parking brake on, car in park, headlight turned off (to reduce load on the 12V circuit) - Turn car on - Wait until the left-hand dial goes to the...

I tried this several times this morning, before and after driving to work and each time the result was "SOC ---%" Any ideas?

Please, read my post from about a week ago in this thread. I verified that the car stays on for at least 3 hours with the key in the house and car in the garage. I also used a multimeter to verify the voltage regulator is charging the 12V when the car is on. To be clear, the eGolf didn't turn...

A LiPo battery charger for R/C things. Yes, the chain is pretty convoluted. It is HV DC from traction battery -> ~12V circuit on the car -> DC/AC inverter -> AC-to-48VDC PSU in my charging rig -> Battery charger. That's not very efficient, I know, but it was easy to setup. In the future I'll...

Ok, so I got hold of a 750W inverter and decided to test with that. Car on, lights/etc off. 13.20V at batt + and labeled ground Connected inverter, with a kill-a-watt between the AC output and the load. For about 20min, Kill-a-watt measured bounced around between 375-400W, at this load, the...

Nothing rigorous, but it seemed roughly the same before and after. Not at all. I made a point of turning off the headlights, head unit, etc. So whatever load the car has in the "on but not ready" state. Applying an actual load of maybe 10A for 30-60min is next, once I get some cables made.

Update: The answer is at least 3hrs. I ran a quick-n'-dirty test to see how long the voltage regulator stayed "on". Results: Car off, hood up, use a multimeter to see the voltage from positive 12V AGM battery terminal to the ground point (VW helpfully has a labelled "use this instead of the...

Nice find! Does anyone know where this 2.5kW DC-DC convertor (just a voltage regulator?) is in the car? I'm wondering if I can find it and get a part number and maybe get one of my local service folks to tell me a bit more about the specs.

Totally agree, I wouldn't do this with the "12v power/cigarette lighter" ports in the car. I have it in my head those are typically spec'd at about 5A/50W. if I go forward with this, it would be ring terminals and 6 or 8ga wire to the R/C charger.