How many amps should I set the charger for?

[Art]

I’m about to pull the trigger on a level 2 charger. I have a 2023 premium standard range battery. How many amps should I set the charger for? How many amps does the portable charger provide?

I have a 50 amp breaker and the cable that came with the car is not suitable.
I bought a Grizzl-E that has a fat cable that is twice the size of the cable that came with the car ( MME 2021).
I get 37 miles per hour with this setup, formerly I had 20 miles per hour with the initial cable.

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[PA Bob]

I’m about to pull the trigger on a level 2 charger. I have a 2023 premium standard range battery. How many amps should I set the charger for? How many amps does the portable charger provide?

Let me add two points.
1. You should set the amperage that the charger will draw to 20% less than the amperage of the circuit. I have a 50 amp outlet so I charge at 40 A.(20% of50is 40)when I go to my father-in-law‘s house, we use his 30 amp circuit. I then set my charger to 24 A.(20% of 30 is 24.)
2. I have a regular NEMA 14-50 outlet that I plug my charger into. Some people on this forum have suggested that you use an outlet that is rated for continuous use. Mine is a regular dryer outlet that is not rated for continuous use. Charging at 40 A, hasn’t caused me any heating issues. but I may change my setting to 32 A just to be safe.

 

[William Shaw]

I’m about to pull the trigger on a level 2 charger. I have a 2023 premium standard range battery. How many amps should I set the charger for? How many amps does the portable charger provide?

If your in a hot climate consider where/when you are charging .some people were over heating at 48 amps on hot days .went with 40

 

[mccdeuce]

i am also in the market for an adjustable charger. i didn't realize if i am traveling and find a 30a circuit (which are common in older houses, driers), you have to go down to 24a (or 30a ok if less then 2 hours continuously). the point of the travel chargers is emergency use, to but be able to use drier ports seems a big gap.

so which small adjustable portable charger is in vogue?

I absolutely agree - portable charger needs to be adjustable to the max. I am on work travel for a few months now so bought a Grizzl-E mini. Have plugged into 120V and limited to 8amp, Oven outlet (40amp), and now in the dryer outlet on a NEO Charge smart splitter. Set for 20amps because I don’t need it higher.

I’m very happy with it - and if you additional questions hit me up.

 

[bbulkow]

I absolutely agree - portable charger needs to be adjustable to the max. I am on work travel for a few months now so bought a Grizzl-E mini. Have plugged into 120V and limited to 8amp, Oven outlet (40amp), and now in the dryer outlet on a NEO Charge smart splitter. Set for 20amps because I don’t need it higher.

I’m very happy with it - and if you additional questions hit me up.

Wow the price on the mini is $490. Might still be top of the list, i haven't found anything else that does 40a to 7a. I have a grizzle wall adapter they are high quality.

-b

 

[Billyk24]

37

I have a 50 amp breaker and the cable that came with the car is not suitable.
I bought a Grizzl-E that has a fat cable that is twice the size of the cable that came with the car ( MME 2021).
I get 37 miles per hour with this setup, formerly I had 20 miles per hour with the initial cable.

37 Miles of range per hour with this setup? That is way beyond what Ford states the MME is capable of with its 10.5kW on board charger. You need to post some screen photos of such.

 

[Billyk24]

10

That's interesting. 10Kw would be considered very slow charging for a 91 kWh battery, so I'm surprised there's any measurable drop in chargin1g efficiency. And Aren't EVSEs just a relay with some control?

L2 10 kWh charging when the on board MME is 10.5kW would be super efficient. In reality, those MME extended range vehicles on a 60amp breaker are in the 9.+ range for most of the charging session.

 

[21st Century Pony]

i am also in the market for an adjustable charger. i didn't realize if i am traveling and find a 30a circuit (which are common in older houses, driers), you have to go down to 24a (or 30a ok if less then 2 hours continuously). the point of the travel chargers is emergency use, to but be able to use drier ports seems a big gap.

so which small adjustable portable charger is in vogue?

I recommend an oldie but a goodie... The Panasonic portable EVSE that originally came with the Nissan Leaf, and some were then modified for the open market by EVSEUpgrade, a very good small business which is no longer around.

That's what I have, on my 3d car now. We use the heck out of it on travels and at home when charging outside of the dedicated utility-provided separate EV meter 240V lower-cost circuit.

This EVSEUpgrade Panasonic portable EVSE is "dumb", and is manually adjustable on the 240V side from 20 amps down to 12 amps or maybe even lower (I can't remember because why go any lower right?). On the 110V side its output tops out at 12 amps.

Its additional and very welcome feature is that its wall whip end is a NEMA L6-30P plug, for which it is very easy to find NEMA adapters or whips with a variety of receptacle plugs. Not something you can say about many other, more modern portable EVSEs with proprietary whip ends.

I write this here because these EVSEUgrade units show up to this day from time to time on Ebay or on EV boards like the Nissan Leaf forum or the PriusChat forum.

 

[bbulkow]

I recommend an oldie but a goodie... The Panasonic portable EVSE that originally came with the Nissan Leaf, and some were then modified for the open market by EVSEUpgrade, a very good small business which is no longer around.

That's what I have, on my 3d car now. We use the heck out of it on travels and at home when charging outside of the dedicated utility-provided separate EV meter 240V lower-cost circuit.

This EVSEUpgrade Panasonic portable EVSE is "dumb", and is manually adjustable on the 240V side from 20 amps down to 12 amps or maybe even lower (I can't remember because why go any lower right?). On the 110V side its output tops out at 12 amps.

Its additional and very welcome feature is that its wall whip end is a NEMA L6-30P plug, for which it is very easy to find NEMA adapters or whips with a variety of receptacle plugs. Not something you can say about many other, more modern portable EVSEs with proprietary whip ends.

I write this here because these EVSEUgrade units show up to this day from time to time on Ebay or on EV boards like the Nissan Leaf forum or the PriusChat forum.

Cool, interesting story, and reliable gear is always good to know about.

but a 20a top end... yikes. 40a in a 50a circuit seems like a better place to be

i have a set of plug converters from 15-50 to other formats. of course that is dangerous, but i believe i can handle it.

bottom line, something like the grizzle mini is pretty appealing except for the price

thanks for the info!

 

[21st Century Pony]

Cool, interesting story, and reliable gear is always good to know about.

but a 20a top end... yikes. 40a in a 50a circuit seems like a better place to be

i have a set of plug converters from 15-50 to other formats. of course that is dangerous, but i believe i can handle it.

bottom line, something like the grizzle mini is pretty appealing except for the price

thanks for the info!

Yeah 20 amps can't compare to the driveway's Grizzl-E's 40 amps... yet 20 amps is unlikely to overload and pop any RV or other 240V receptacles we are likely to plug into, so...

 

[dbsb3233]

Wow the price on the mini is $490. Might still be top of the list, i haven't found anything else that does 40a to 7a. I have a grizzle wall adapter they are high quality.

-b

Grizzl-E has some weird pricing. The Classic 40A unit many of us have (including me) is a great deal at ~$350. Always has been. But then there's the mini that costs a lot MORE rather than less. And $100 for a t-shirt??

$35 for the Tesla adapter seems really cheap though. They seem all over the place on pricing.

 

[dbsb3233]

37

37 Miles of range per hour with this setup? That is way beyond what Ford states the MME is capable of with its 10.5kW on board charger. You need to post some screen photos of such.

Miles is such a bad way to measure it. That's likely GOM miles, and we know that the GOM can be +/-50% from situation to situation. Even on the same car!

 

[Auto Motive]

I’m about to pull the trigger on a level 2 charger. I have a 2023 premium standard range battery. How many amps should I set the charger for? How many amps does the portable charger provide?
Got a juice box 40 wired unit and its hassle free setting to highest amp of vehicle. Auto feature or manual setting in app at 40 for our GTPE. Had it a year and its been flawless $700 on Amaazon. Black friday may be lower. Its on a 50amp breaker.

 

[737flyer]

You can now:

My screen looks different and I have the latest update. It shows circuit breaker amps and I can’t change it.

 

[RickMachE]

I have a 50 amp breaker and the cable that came with the car is not suitable.
I bought a Grizzl-E that has a fat cable that is twice the size of the cable that came with the car ( MME 2021).
I get 37 miles per hour with this setup, formerly I had 20 miles per hour with the initial cable.

The thickness of the cable has no bearing on the charging speed, in that you can't look at a fatter cable and say "that's twice as fast". I bought a JuiceBox 48 during Covid, and it was made at their HQ by hand using supplies they got ahold of. It was recently replaced with a newer one, same model. The cable is significantly thinner on the new one, yet it charges at the exact same speed.

A 50amp breaker means you can charge at 40amps maximum.

40 x 240 X 90% (10% loss) = 8.64kWh

The Ford Mobile Charger is:

32 x 240 x 90% = 6.91kWh.

8.64 / 6.91 = 25% faster.

37/20 = 85% faster. Can't be.

Miles is a very inaccurate measurement, since it depends on your driving, temperatures, etc.

If I drive on the highway at 70mph in 70 degree weather, I get 2.8 and use 25 kilowatts.
If I drive in the city at 25mph in 70 degree weather, I get 4.0 and use 6.25 kilowatts.

That's why "miles per hour of charging" is useless.

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