another note on this one... The issue with using the AC port is that the current must be at least 6A @230V as per the PWM protocol used with SAE J1772 plugs :cry: so that makes using a small scale inverter like 250W Victron Phoenix impossible and in any case would required not a standard lead acid 1...

I believe it will be difficult to match the Charger input power with the MPPT but I agree most likely connecting DC to the charge port could work in many cases. But going back to the idea of using an inverter, the 12V battery would function as a buffer so it wouldn't matter if a few extra Watt are d...

Scary indeed, therefore the question how to do it safe. Getting an estimated 2500km free charge per year on an EGolf is quite a nice feature, not so much for the monetary saving but more for the convenience of not having to charge much during the summer months as a city driver without access to ones...

Sounds good, would you have a picture of where to access those cables on the PTC or Compressor? You drive an EGolf? So far I have ordered only two prototypes of this MPPT, it's still in the making but I could potentially spare one yes if you want to help a little on the RnD :-) I wrote some basic MP...

You might need to think this over. HV cables in OEM vehicles are usually screened, so coaxial cables. You would pierce through screen and conductor, likely shorting them out on DC+ and DC- and thus shorting DC+ to DC- and to chassis. OK, you are right. They really seem to be shielded. Any idea wher...

In order to be able to feed power into the battery, the contactors internal to the battery case need to be closed, or you have to tap to the inside of the battery which is quite a lot of work. In order to close the contactors you need to make the BMS think the car is either driving or charging. You...

Yes, sure let share some more details. So here is a picture of the MPPT Electronic I designed since I didnt find a suitable Electronic on the market: MPPT.jpeg Charging the 12V battery is certainly way simpler but also not really effective since it gets full relatively quickly from 200W PV mounted o...

Hey guys, I am new to the forum, I hope this topic has not yet been covered. So I have an E-Golf 2020 and I now designed a 50V to 400V 200W MPPT power electronic that I want to integrate into the car and charge the car from flex solar panels on the roof. I am a of course a little scared to destroy t...