3 ms·
Comparing on a percentage point basis, you have to ensure that the underlying physical system is equivalent, in this case, the capacity of the batteries. Curre
by kumarvvr 9y ago
Comparing on a percentage point basis, you have to ensure that the underlying physical system is equivalent, in this case, the capacity of the batteries.
Current superchargers charge at 2% / minute. I am assuming that's the maximum rate of charge, given the current supercharger infrastructure.
Lets assume that 2% / min is, say, at a 100 kW power level.
When charging a truck, assuming the supercharger technology isn't changed, the charging will still be at 100 kW power level.
So if the truck has 10 times the battery capacity, then the equivalent %age rate of charge will be 0.2%, not the same 2% as the capacity of the battery to be charged has changed.
Personally I think Elon is either going to add multiple charging inputs per truck and combine it with a special supercharger, or have some sort of port in the truck to which a special connector is connected to transfer huge amounts of power safely, not unlike a dock at the under side of the truck, or maybe the front.
- chrishacken 9y agoI'm no battery expert, but is it possible that they have several battery compartments that can all be charged simultaneously? Thus reducing charge time? Edit: Just read the latter part of your post after I wrote this. I think this is the most likely scenario. "Personally I think Elon is either going to add multiple charging inputs per truck and combine it with a special supercharger,"
- kumarvvr 9y agoYes it's possible. We could have a power port like a VGA cable with say 10 or 20 independent supplies, simultaneously charging the different battery units. However those connectors will be very bulky and heavy. Maybe Elon is thinking of a mechanized system, say a power robotic arm sort of thing, or maybe tech similar to the instant battery changing station he demoed a few years back.
- wlesieutre 9y agoThey do call it a "megacharger," and the port appears to have multiple connections https://www.teslarati.com/tesla-semi-megacharger-charging-port-close-up-look/ https://www.teslarati.com/tesla-semi-megacharger-charging-po...