I agree wholeheartedly that placards should be the preferred EVSE handoff for daily use common access EVSEs. I also agree that having many L1 charging stations (depending on how you define "many") at long term parking places (like airports) would be preferred for cars with TMSs, rather than having them take up L2 EVSE spots. But having a Leaf parking at an L2 spot for 3 days doesn't make any more sense than having a Volt park there... I think large pool L1 charging stations should have J1772 heads on them rather than NEMA 5-15s. The theft risk is too high IMHO for leaving customer EVSEs laying around on the ground unattended.evchels said:Perhaps, but this is both a geographically specific issue, and boils down to siting the right speed of charging in the right place from the outset. [...] For longer-term cases like airports, it makes more sense to install 120v outlets than to concede that a liquid TMS car should get to occupy a Level 2 spot for days longer than it takes to charge on the off-chance it may benefit from remaining connected for TMS purposes.Rusty said:The point I'm trying to make is that some (and quite possibly most, in the near future) fully charged battery electric vehicles still get significant benefits from remaining plugged in to an EVSE.
It remains to be seen in the market just how robust or sensitive one battery implementation is, compared to others. We'll see in some 8-10 years after battery vehicles have been in Phoenix just how much of an issue this is, brand to brand, as to which implementations prove to have made the best cost/reliability trade-offs. Baking all day in a parking lot at 140 degree temperatures for months and years on end should provide good data there.edatoakrun said:The point you made to me, is yet another reason delicate batteries that get "uncomfortable" in normal ambient temperatures are impractical, and likely to be superseded by more robust designs, such as the LEAF's.
Yeah, I thought about that after I wrote it. I think I agree with you. Charger overhead in most cars is probably going to eat up most of 360W. So maybe SAE wasn't completely stupid for having a 6A minimum after all. For just maintaining a TMS it's probably overkill. But it's probably not a *lot* of overkill...planet4ever said:If you tried to charge at 3A 120v, that's 360W minus (maybe) 35W for the charger and 300W for the cooling. So the battery might only get 25W. Now that's what I call a trickle charge!