speed77

So I was recently given the ChargePoint home flex when I purchased my taycan turbo. Have it set up at 50a (max 40a delivery). Plugged in today with 50% charge at 430 and the app was telling me that I would be at 100% charge by 1 am (which I thought was ridiculously long). Checked the app and car was getting 8.7kw which seems appropriate for 40a.

however, just now at 940 I got a notification saying my charge was complete. I wasn’t checking the app so didn’t monitor charge speeds but am very suprised at the variation in charge time estimate vs actual completion time. Don’t think my charger all of a sudden sped up. What am I missing here?

daveo4porsche

this is a matter of proifles/timers in the vehicle - check your profiles/timers to see when/how the car is currently configured to allow charging to happen - this is not a matter of how fast your EVSE (charger) is - it's a matter of when the car decided to let the battery be charged.

Porsche's in-car charging software, it's configuration, function and general operation is one of the most confusing EV's on the market - there is a great video showing how Profiles and Timer's work I'll try and find it.

this thread will get you started - https://www.taycanforum.com/forum/th...d-timers.6799/

speed77

Cool thank you. I think all the charging profiles are off. But I’ll double check. Might have to do with the charger settings as well.

daveo4porsche

1. 100% should _NOT_ be your daily charge target 80-85% is the recommendation for battery health longevity
   1. 100% is for the night before a road trip or when you _KNOW_ you'll need the extra 15%
2. assuming your data is correct - you were at 50% and charged to 100% - car's usable capacity is 84.3 kW - so 50% of that is 42 kWh
   1. 42 kWh + 10% overhead to account for charging losses is 46 kWh consumed by the EVSE required to reach 100% battery capacity.
   2. 46 kWh / 8.7 kW = 5.2 hours required charging time
3. 4:30 pm (when you plugged in) + 5.2 hours = 9:30 pm estimated completion time - you were notified about the car being charged 9:40 pm

I would humbly suggest the car's original estimated charging completion time is a demonstration of Porsche's software skills and not any actual "problem" and perhaps user interface design skills - Porsche excels at mechanical/analog engineering - EV's are more digital - Porsche still has lots and lots of room for improvement in the area of EV's and Digital/Software…

in any case - math says your 9:40 pm my battery is charged is bang on accurate for 40 amp charge rate on a 50 amp breaker.

if you're running a pluggable ChargePoint Flex (vs. hardwired) please tell you got the memo to make sure your electrician installed a Hubble commercial grade socket vs. a $12 NEMA 14-50/6-50 purchased at home depot. This is EV industry best practice in North American and specifically called out by name by Porsche's own EVSE install documentation.

https://static.nhtsa.gov/odi/tsbs/20...22530-0001.pdf

as to why the car/app said 1 am - I'm going to chalk that up to Porsche's software excellence - it won't be the last time there is a software glitch in a Porsche product.

daveo4porsche

post #13 has a photo of "hubble" socket - so you should be able to visually inspect the socket and look for the product name as noted in the photo - if it doens't look like the photo it's probably not a hubble socket and I _HIGHLY_ recommend paying to have it swapped out - EVSE's are unique home appliance in the loads they place on electrical infrastructure - you need/require a socket that won't degrade over time due to thermal stress from hours of running at a full 9.6 kW every day…

https://rennlist.com/forums/taycan/1...l#post17556267

post #13 in the thread above.

speed77

Rennlist is ****ing great! Thanks guys. The math makes sense which is why I was so confused.

thank you for clarifying.

need to chuck for a Hubble socket asap.

daveo4porsche

can't leave us hanging on the Hubble drama - let us know your results…

speed77

Well this is my outlet. And it doesn’t say Hubble on it so looks like I’m calling my electrician…

speed77

Also that photo couldn’t have been darker. Let me see if I can get a better one.

speed77

Little better.

daveo4porsche

not a hubble

thebishman

Here you go:

speed77

Thanks all. Ordered.

speed77

Installed!

sasilverbullet

Hm, electrically minded person here, what's the difference electrically? The connector is the same...