nwdiver
Well-Known Member
If you dial your 40 kW to 20, and your charge time goes from 5 hours to 10 hours what's the point?
I'd much rather charge at 250 kW at a Supercharger.
20 kW for 3 hours? That's 60 kWh. Some headwind.
The reason you can't buy a 20kW charge for cheap is that much electronics is expensive. Any anyway you don't need it. You'll need it less when you get your 500 mile range Cybertruck. You'll be able to get to a Supercharger from about anywhere.
For my Model 3 I have a Gen1 UMC and could charge up to 40A on my 50A circuit but I have it turned down to 20A because it's kinder to the grid and I just don't need to charge that car any faster except while traveling and then I use Superchargers.
The point would be charging at home for cheap (for me it's ~$0.03/kWh) instead of a supercharger. ~20kW would be ~2x L2 if 48A is the new standard. Also for areas without a nearby supercharger 20kW would again be much better than L2. The chargers I'm installing are in Artesia... the closest supercharger is >100 miles away. A 20kW L3 shouldn't cost >$10k. Even an urban charger is probably close to $100k. Even once there are superchargers in the area... 20kW L3 is cheap enough that a host can offer it free as a perk instead of paying $0.20/kWh at a supercharger. So instead of paying $12 to charge at a SC... pay $12 for a Combo Meal at McDs
Yeah... they thought they could make it but had to turn around. By the time they got here the battery was at ~20% and they needed a full charge to make it. Maybe ~2 hours would have been enough at 20kW.
Off-board is the ~same cost as onboard. My point is that instead of offering 20kW (80A) as an onboard option offer it as an off board (L3) option. Why not? If someone thinks they might need to charge a bit faster than 48A would not an off-board option be the better way? I would prefer a 20kW L3 option over a 20kW L2 option. I can install a 20kW L3 that all Teslas can use.
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