[Ken7]

Originally Posted by spool twice

thanks! great chart!

So there looks to be another advantage in getting a wall unit, the benefit of using the full 48A/11kw charging system.

Looks like at 60% (SOC 20% to 80%), it would take 5hrs 2 mins @ 9.6kw, but it would take 4hrs 23 mins @ 11kw.

39 mins is a sizable gap which will only widen if your charging > 60%

But I suppose if it's only for overnight charging that it wouldn't matter too much.

That's the conclusion most come to when deciding about things like this. Who cares for another couple of hours if you're sleeping through it?

[BimmerBahn]

Originally Posted by Ken7

That's the conclusion most come to when deciding about things like this. Who cares for another couple of hours if you're sleeping through it?

Agreed! I never got a wall connector for my Tesla... ended up being fine just with a mobile connector at 240V @ 32A. I considered a Juicebox or another J1772 compatible wall charger that would support both my i4 M50 and my wife's iX, but she's not sold on BEV's yet... so will probably just stick with a mobile charger at 40A (NEMA 14-50)

[kbsilver]

My 2 cents. Having the wallbox is not so much about speed as convenience. In this way you can always leave the portable charger in the car and not be caught home without it, when it's really needed.

The 14-50 receptable is not designed for repeated insertions and will eventually wear out if the plug is not left in.

I happen to have a Tesla wall charger installed for my son when he visits. I plan on simply getting a Tesla to J1772 adapter for the i4. Also Tesla now sells a version of their wall charger with a J1772 plug for $500.

[ZCD1]

Originally Posted by kbsilver

My 2 cents. Having the wallbox is not so much about speed as convenience. In this way you can always leave the portable charger in the car and not be caught home without it, when it's really needed.

The 14-50 receptable is not designed for repeated insertions and will eventually wear out if the plug is not left in.

I happen to have a Tesla wall charger installed for my son when he visits. I plan on simply getting a Tesla to J1772 adapter for the i4. Also Tesla now sells a version of their wall charger with a J1772 plug for $500.

The only times I’ve ever taken my portable charger with me was when I was headed out of town for an extended trip and I knew there’d be a 14-50 receptacle at my destination. Otherwise it just stays plugged in. 🤷

Now I do keep my set of charging cable adapters in the car at all times, because that way I can charge at whatever type of charger might be available.

[spool twice]

Looking towards the future, wouldn't it make more sense if you are needing to have wires installed to look into a 100amp system to cover basis for potential 19.2kw@80amp for upcoming vehicles or potential software updates from BMW?

[kbsilver]

Originally Posted by spool twice

Looking towards the future, wouldn't it make more sense if you are needing to have wires installed to look into a 100amp system to cover basis for potential 19.2kw@80amp for upcoming vehicles or potential software updates from BMW?

Many if not most homes could not support an additional 80 amp load. It would be rare a home would be built with that amount of excess capacity.

[techwhiz1]

Originally Posted by kbsilver

Many if not most homes could not support an additional 80 amp load. It would be rare a home would be built with that amount of excess capacity.

An additional 80 amps is definitely more than most houses. I had my service entry updated to 250 amp service when I bought my first EV because the electric company ran wires to my house and the neighbor to support 800 amps.

We are far (100+ feet) from the street so they made it such that they would never need to upgrade the wiring to our two houses.

[BimmerBahn]

Originally Posted by kbsilver

My 2 cents. Having the wallbox is not so much about speed as convenience. In this way you can always leave the portable charger in the car and not be caught home without it, when it's really needed.

The 14-50 receptable is not designed for repeated insertions and will eventually wear out if the plug is not left in.

I happen to have a Tesla wall charger installed for my son when he visits. I plan on simply getting a Tesla to J1772 adapter for the i4. Also Tesla now sells a version of their wall charger with a J1772 plug for $500.

Agree on the receptacle comment -- in my case I bought a second mobile connector... one stays in the car and the second is the "home charger". looking at the specs of the BMW mobile charger, it supports the full 9.6KW... I might end up just getting a second mobile charger for the i4, too vs dealing with an install of a wall charger.

[SteveinArizona]

Originally Posted by techwhiz1

An additional 80 amps is definitely more than most houses. I had my service entry updated to 250 amp service when I bought my first EV because the electric company ran wires to my house and the neighbor to support 800 amps.

We are far (100+ feet) from the street so they made it such that they would never need to upgrade the wiring to our two houses.

My house had 200 amp service. When I installed a heat pump for my pool, I originally asked to have the service updated to 400 amps. The electrician said that they would have to trench my lawn to bring in an extra line to do that. I really didn't want my lawn trenched. He was able to upgrade me to 225 amps without trenching.

When I installed my charging box, the electrician had to move everything around to get me a 20 amp dedicated line. So at this time I am limited to a 20 amp circuit.

Upgrading to 400 amps is great but digging a long trench in my lawn is not so great.

[Straycatndc]

You have 225 amp service and the electrician couldn't squeeze out another 28amps to give to 11KW charging? I'm curious what other high wattage appliances you have? Or was the issue no available slots in the panel for the 240 vac breaker?

[spool twice]

Apparently a 100AMP system is last years news...

https://techcrunch.com/2022/01/06/ev...ty-at-ces/amp/

Anyone want a 240v/150A system in their homes? 28.8kWh at your finger tips....

[techwhiz1]

Originally Posted by spool twice

Apparently a 100AMP system is last years news...

https://techcrunch.com/2022/01/06/ev...ty-at-ces/amp/

Anyone want a 240v/150A system in their homes? 28.8kWh at your finger tips....

Yeah, I think those are commercial.

The 50A L2 product for home looked interesting.
Most people will have issues trying to just get 40A into a panel.

I had my service entry redone for 200A service a few years ago. I can drop the 50A breaker pair in the aux panel that doesn't get backed up.

[kbsilver]

Just remember full 48 amps requires a 60 Amp circuit (not a socket). You cannot use a NEMA 14-50 outlet which is technically rated for 40 amps. National Electric Code only allows you to connect a continuous load of 80% of the circuit rating.

[techwhiz1]

Originally Posted by kbsilver

Just remember full 48 amps requires a 60 Amp circuit (not a socket). You cannot use a NEMA 14-50 outlet which is technically rated for 40 amps. National Electric Code only allows you to connect a continuous load of 80% of the circuit rating.

For me it's all wired in the panel.
The next L2 will be less than 15 feet from the mains.

[Petee_c]

Originally Posted by spool twice

Does anyone have the specs of BMW's NEMA 14-50 adapter? Trying to find out if can 240v/48a or if its possibly a lower amp?

If the i4 can support 11kw with a 240v/48a outlet, I'd at least like to know if the supplied adapter can supply the full 11kw charging or if I'd need to purchase a seperate unit (my OCD...)

For the Cdn BMW package... they supplied charger is only level 1... so I don't think it will do 11kw

[WhereItsAt]

The chargepoint is available up to 50 amps (requires 60amp service and hardwiring by removing the 14-50 adapter).

[spool twice]

Originally Posted by Petee_c

For the Cdn BMW package... they supplied charger is only level 1... so I don't think it will do 11kw

Oh wow! Yeah that's not good. USA cars come with a Nema 14-50 adapter rated up to 9.6kWh charging (level 2)