Increased charging performance?

[Dear_OP]

Hello,

I noticed that Tesla's adapter charge chart might've changed a little. IIRC the model 3 and Y share same charging speeds per the adapters. However I noticed the chart now shows Model 3 to be a bit faster than the Y for the L2 adapters. ie 14-50 and 6-50. Any guesses?

 

[ucmndd]

Hello,

I noticed that Tesla's adapter charge chart might've changed a little. IIRC the model 3 and Y share same charging speeds per the adapters. However I noticed the chart now shows Model 3 to be a bit faster than the Y for the L2 adapters. ie 14-50 and 6-50. Any guesses?

View attachment 1058348

Miles per hour is not a useful comparator between different models.

They charge at exactly the same power level but the 3 is more efficient than the Y, thus gains more “miles” for the same amount of energy added to the pack.

 

[E90alex]

Because the Model 3 is more efficient. It’s not charging faster than the Model Y. The charging rate in kW would be the same between the two cars. It’s just the Model 3 can go further for the same amount of energy charged into the battery.

Miles per hour of charge is a terrible way to measure charge rate. Best to just compare by kW or voltage/amperage.

 

[DuncanM]

Hello,

I noticed that Tesla's adapter charge chart might've changed a little. IIRC the model 3 and Y share same charging speeds per the adapters. However I noticed the chart now shows Model 3 to be a bit faster than the Y for the L2 adapters. ie 14-50 and 6-50. Any guesses?

View attachment 1058348

A 5-15 can give 12A/120V or ~1.4kw/hr which will give about a new M3 RWD or LR about 5 miles (8km) of range per hour of charge. A 5-20 will give up to 120v/16A and ~1.9kw/hr of charge or about 7 miles/hr of charge.

 

[yesimon]

A 5-15 draws 1.44 kW from the wall, but at 85% charging efficiency and ~300 W overhead from the car being on, puts maybe 1 kW into the battery at best, which matches the 3 mi/hr figure in the Model 3 chart above.

The Model Y figures are updated to reflect the downward revision of Model Y EPA range starting in 2024.

 

[DuncanM]

A 5-15 draws 1.44 kW from the wall, but at 85% charging efficiency and ~300 W overhead from the car being on, puts maybe 1 kW into the battery at best, which matches the 3 mi/hr figure in the Model 3 chart above.

The Model Y figures are updated to reflect the downward revision of Model Y EPA range starting in 2024.

Not in my experience, as the overhead is about 200-250w and 1kw from the HV battery = ~4.25 miles of EPA range for an LFP M3 RWD. I get about 1.6% SOC/hr increase when charging at 110v/10A.

 

[Dear_OP]

Ahh thanks for that illuminating insights @ucmndd and @E90alex (ooh I used to have a '06 330i!)

So why not call it as it is? This chart gives the impression the M3 charger is marginally higher performing at slurping electrons over the Y.

 

[Gasaraki]

Yeah, distance per hour of charge is dumb.