OK what do you use that cascaded balancers for? What trick? I simply assembled the second battery and connected it to the first one via IGBT regardless of the SOC. Since the diode will block any current backwards charger current will first flow to the second battery then fill up the first one. I us...

I connected on the battery + & -, so I bypassed the current sensor in the pack. Another american I have been working with went through the pack and current sensor with his pack (just wired the 2nd pack wire through the sensor. By going through the current sensor, the HPCM2 will play nice and an ...

Hey Arber, Ended up getting sometime during the nice weather, I have everything hooked up. I am able to start the car fully charged and drive, however (Usually on regen). Get "Propulsion reduced", battery on screen grays out and the generator kicks on. I pulled codes, I got a P0B11. I read...

for the IGBT can you outline the gate and m4 emitter connections? I see you have the main battery connected on the emitter and the VW cells to the collector (I assume for the passive diode in the IGBT). Are you using the transistor portion at all? it looks like there are connections.

Thanks for the information. so Torque pro was able to clear your codes and you didn't need like an MDI clone and GSD subscription for resetting the HPCM2. I saw you contemplating a time-delay (2 seconds) for the Aux battery contactor activation, thanks for confirming how you ended up solving that. D...

Well i tried by charging directly and the car wasnt happy. Finally we used OEM charger charging original battery, but i added a diode (reverse 300A transistor diode) across second contactor. This makes the charge flow over to the second battery as it is being charged. It takes like 6 hours overnigh...