How many go full send when charging at home?

[Dynabro86]

It just means maxing out your EVSE charging rate. I myself usually turn down the amp draw in the main screen before I charge, but I feel like most people just max out the charging rate. Aka full send!

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[bigsky]

I always charge my Teslas to 80% and my Rivian to 70%. I rarely ever let either get below 20%.
When in storage, I keep them charged to 50%, charge again when it drops to 20%. Rinse and repeat. I also always charge full blast using my Tesla wall charger (it's what I call it), Tesla-certified professional installation because for me the penny-wise-(DIY)-pound-foolish-(house burns down) factor is a no-brainer. Plus 50% cost savings (parts and installation) with tax credit and utility rebate.

Always charge full blast at 48 A. No derating. 60 A breaker never gets even lukewarm. I just do not see the point in purchasing something to always run it in limp mode at anything less than full functionality.

I have no TOU rates because electricity is dirt cheap @ $0.07/kWh. Charge whenever I feel like it or need to.

For the occasional long road trip, I may charge to 100% out of my house.

I do not need more than one wall charger, either. Have rarely used either of the Mobile chargers.

 

[carsly]

In another generation it was 'fire and forget' or 'put the hammer down'

 

[carsly]

I just do not see the point in purchasing something to always run it in limp mode at anything less than full functionality.

You should try a Model S Plaid, that take will last exactly 1.4 seconds. Heck, even most Rivians must be driven 'at anything less than full functionality' on public roads.

 

[bigsky]

You should try a Model S Plaid, that take will last exactly 1.4 seconds. Heck, even most Rivians must be driven 'at anything less than full functionality' on public roads.

Sure, good point, but that really does not count for me and is N/A because I have no desire to ever drive even at 75, let alone those much higher speeds. And no-go on public roads, anyway. I am never in a big [expletive] fat hurry to get anywhere. Drive 65 on highways most of the time.

My Model S Raven does 0-60 in 2.5 sec. Pokey by current standards, perhaps, it is still insanely, painfully fast for me. Never gets old trying it out.

 

[carsly]

Sure, good point, but that really does not count for me and is N/A because I have no desire to ever drive even at 75, let alone those much higher speeds. And no-go on public roads, anyway. I am never in a big [expletive] fat hurry to get anywhere. Drive 65 on highways most of the time.

My Model S Raven does 0-60 in 2.5 sec. Pokey by current standards, perhaps, it is still insanely, painfully fast for me. Never gets old trying it out.

LOL, I had a Model X Raven, even slowwwer at 2.8 sec 0-60. That was more than enough!

Ultimately all these rocket-like accelerating EV's are traction, and traction-control, limited. The Plaid, oddly enough, never even squeaks its tires. The traction control is astonishing. Meanwhile my R1S dual will squeak the rubber and lift its nose as soon as you tip in. Go figure.

 

[bigsky]

LOL, I had a Model X Raven, even slowwwer at 2.8 sec 0-60. That was more than enough!

Ultimately all these rocket-like accelerating EV's are traction, and traction-control, limited. The Plaid, oddly enough, never even squeaks its tires. The traction control is astonishing. Meanwhile my R1S dual will squeak the rubber and lift its nose as soon as you tip in. Go figure.

LMAO. "Slower." Isn't that something!?
You know, I got my Model Y Performance two years after my Model S Raven. I thought getting the Y might be a letdown compared to the MS. Hell, no. My beloved MYP too is so much fun and awesome to drive. 3.5 sec. 0-60, an EV eternity today, LOL!

Come to think of it, I thought I heard my Raven front wheels squeal the other day...for the first time.

My R1S beast, so powerful, I do notice that it tends to lean in turns; handling definitely does not feel as secure (on rails) as that of my Teslas. Like it a hell of a lot nonetheless.

 

[Effopec]

My garage had a 220 x 20A outlet when we bought it, so I haven't had any real reason to update it (gives me about 3%/hr). My wife and I share the charger, but she works from home so only charges about once/week. I charge 2-3 times/week usually to 70% The only times I've really wished I had a faster charger is when getting ready for a long trip. Friday morning we are leaving on a trip where the first charger I would like to stop at is 205 miles. I will have the bikes up top so that will degrade efficiency a bit. I also will be out Thursday evening til after midnight (late hockey game), so that really cuts down on my overnight hours to charge. So tonight I will charge up to 90%, then probably plug in for a few hours again tomorrow evening before my game, then again when I get back.

 

[NeedSumCoffee]

I have a Gen2 Tesla charger with 80A max charge fed from 100A breaker. Rivian won’t let me go full send though. I can only go half send.

 

[bigsky]

I have a Gen2 Tesla charger with 80A max charge fed from 100A breaker. Rivian won’t let me go full send though. I can only go half send.

As far a I know Teslas can level 2 up to 48 A only same for Rivians. Unless charging two of them at once, what do you gain using such a charger if with one Tesla or Rivian?

 

[BTOR]

Curiosity got the best of me, and I'm wondering what some people's charging habits are.

I have had my Rivian for one year, and I have a detached garage that has a 50amp sub panel in it. Because I also have a 30 gallon vertical compressor in there that could draw 15 amps, I opted to put in a nema 14-50r that's on a 40 amp breaker, and configured my grizzl-e to max 32amp out put.

However for the most part, I think I only used the 32 amp output on a handful of occasions. Because I have set electric rates, I just plug in when I get home at night and I find myself lowering the charge output on my dash to between 16-22 amps. This allows my car to charged from 50% to 70% in 6-8 hours which is plenty for me. I guess in my head limiting the charging rate also gives me a lot more more peace of mind that nothing is going to melt. I just rarely full send it.

I guess if you have time of use or some type of variable utility rate then going with the 60 amp setup would make sense. But I'm curious on everyone else charging habits. Am I a outlier? Who goes full send all the time?

I charge full 48 amp on a 60 amp breaker when I charge which is only 2-3 times per month. It consistently delivers 11.7 kw. I run the SOC to 20-30% then charge to 70%. Our rates are flat so time of day doesn’t matter. We have the max battery pack so if SOC starts at 20% and I charge to 70% that is approximately 70kWh which typically takes 6-7 hrs since it isn’t 100% efficient (heat loss).

 

[docwhiz]

As an electrical engineer I've learned to not operate electrical devices at their maximum spec. Lots of variables can add up to disaster.
I always run things well below maximum.

 

[bigsky]

As an electrical engineer I've learned to not operate electrical devices at their maximum spec. Lots of variables can add up to disaster.
I always run things well below maximum.

Is a circuit breaker operating at 20% derating by definition not running at maximum?
My Tesla wall charger is designed to operate at 48 A. I do not think derating it increases longevity. If anything, the AC-DC converter on my EVs, designed to operate up to 48 A AC input might arguably be operating at maximum capacity always. That said, I have never heard or know it to be a big issue that of AC-DC converters failing, at least Teslas or Rivians.

 

[Allister]

I charge 95% of the time at work - usually get in between 20-30%, charge until about lunch time up to just under 70% at 48A, and that covers my commute home and back. I try to charge up to 85% on Friday's so if I do some errands over the weekend I'm still using from what I got from work.

Honestly doesn't matter much either way since I've got solar at home, so if we're doing a roadtrip I'll charge up at home. 2 Tesla units at home, one for my wife's Ioniq and the other for my truck when I need it.

 

[docwhiz]

Is a circuit breaker operating at 20% derating by definition not running at maximum?
My Tesla wall charger is designed to operate at 48 A. I do not think derating it increases longevity. If anything, the AC-DC converter on my EVs, designed to operate up to 48 A AC input might arguably be operating at maximum capacity always. That said, I have never heard or know it to be a big issue that of AC-DC converters failing, at least Teslas or Rivians.

Running a continuous load at 80% of breaker capacity is the maximum.
Best to stay well below that for longevity and efficiency.

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