cwerdna wrote: ↑
Thu Jan 09, 2020 10:21 pm
The guy told me the reason is that if you have no grid power and let's say you turn on an oven. Suddenly, there's a huge jump in demand and CHAdeMO doesn't let you do have that sudden sharp increase. I don't recall if the words he used were that it has to be a ramp up or in steps.
That would make sense if the CHAdeMO (or CCS) cannot respond fast enough and result in a serious voltage drop in the AC side - even though the EV battery is plenty big enough to supply the DC current. There is also the issue of syncing up with the grid when the utility power comes back. The hybrid solar inverters that have battery storage for backup have figured all this out, but their storage batteries don't have the CHAdeMO/CCS protocols to deal with.
2012 Leaf SL; 46,000 miles. Battery replaced November 1st, 2016.