3 ms·

So he was getting supercharger speeds (50% battery in about a half hour) which is awesome! The Tesla has its own built in "supercharger" if you can find an alte

So he was getting supercharger speeds (50% battery in about a half hour) which is awesome! The Tesla has its own built in "supercharger" if you can find an alternative way to power it. My idea then is this - could a dyno be modified to be powered and function as competitive to a Tesla supercharger? Basically towing it in-place. It would be rad to see this work! I could imagine connecting it to a geared waterwheel for mechanical power if you lived next to a fast moving river, for example.

worldsayshi 5y ago
That sounds quite clever! Another potential for low cost infrastructure in remote places.
- ricardobeat 5y ago
  It's unlikely that a dyno + all the associated infrastructure would be lower cost than a 150kW charger - they cost ten to twenty thousand dollars apparently.
TylerE 5y ago
No, it quite explicitly states this is "fast" (e.g. home) charging and NOT even v1 supercharger speeds. "putting back electricity into the batter at a rate of 65 kW - not quite Supercharger speeds, not even V1 or V2 Superchargers that could muster up to 150 kW, but still pretty decent."
- ajross 5y ago
  There are no home chargers that can supply 65 kW to anything. That's 270A of 240VAC current (which per most codes would need to be on a 340A circuit), where even large homes have a 200A circuit from the utility for the entire building. Home charging is AC charging, and peaks out around 48A/11kW. The term "fast charging" refers to DC chargers that skip the transformer in the car (which is sized only for 11 kW or so) and do it in the charger device, supplying high voltage DC directly to the battery. And this gets into the dozens and hundreds of kW. Tesla's early superchargers were 75 kW, most CHAdeMO in the US is 50 kW, etc... It's faster than some "fast chargers", yeah.

3 ms·

So he was getting supercharger speeds (50% battery in about a half hour) which is awesome! The Tesla has its own built in "supercharger" if you can find an alte

by danboarder 5y ago

worldsayshi 5y ago
That sounds quite clever! Another potential for low cost infrastructure in remote places.
- ricardobeat 5y ago
  It's unlikely that a dyno + all the associated infrastructure would be lower cost than a 150kW charger - they cost ten to twenty thousand dollars apparently.
TylerE 5y ago
No, it quite explicitly states this is "fast" (e.g. home) charging and NOT even v1 supercharger speeds. "putting back electricity into the batter at a rate of 65 kW - not quite Supercharger speeds, not even V1 or V2 Superchargers that could muster up to 150 kW, but still pretty decent."
- ajross 5y ago
  There are no home chargers that can supply 65 kW to anything. That's 270A of 240VAC current (which per most codes would need to be on a 340A circuit), where even large homes have a 200A circuit from the utility for the entire building. Home charging is AC charging, and peaks out around 48A/11kW. The term "fast charging" refers to DC chargers that skip the transformer in the car (which is sized only for 11 kW or so) and do it in the charger device, supplying high voltage DC directly to the battery. And this gets into the dozens and hundreds of kW. Tesla's early superchargers were 75 kW, most CHAdeMO in the US is 50 kW, etc... It's faster than some "fast chargers", yeah.