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This is my second attempt to use the 350 kW supercharger and I have as of yet to get greater than 92kW charging speed. Maybe it is because I am starting at 65% SOC, I don’t know. Has anybody been successful achieving 150 kW speed? I don’t have ECO enabled either.
This is my second attempt to use the 350 kW supercharger and I have as of yet to get greater than 92kW charging speed. Maybe it is because I am starting at 65% SOC, I don’t know. Has anybody been successful achieving 150 kW speed? I don’t have ECO enabled either.
The most I have gotten was 205 kW when the EA charger is working properly. Remember that the EQS is limited to about 200 kW to preserve battery life.
The most I have gotten was 205 kW when the EA charger is working properly. Remember that the EQS is limited to about 200 kW to preserve battery life.
Correct. Also.... in the cold, if you dont precondition the battery, by using the nav system to get to the charger the rate will never reach anywhere near max rate. Finally EA chargers have been having a lot of cold issues.
I figured that was the limitation (preconditioning and temp). We had a balmy 65F going today so I was feeling lucky. I will try from a lower SOC next weekend with my road trip and see what that yields. I usually use Waze and Apple CarPlay when traveling but maybe will use the native Nav and see. I rarely use EA chargers, only when making the occasional road trip, but wanted to verify it would work with hand off (it did). Charging at home or at work is much more convenient.
If you dont use the nav to take you there your almost guaranteed not to get the fastest rate. When all the stars align and you do, its magical, you can get a 90% fill in about 40 minutes from 10%.
If you dont use the nav to take you there you’re almost guaranteed not to get the fastest rate. When all the stars align and you do, it’s magical, you can get a 90% fill in about 40 minutes from 10%.
I’ve been reading the manual and fooling around with the settings in the car and need some help on preconditioning the batteries. Is there a way of doing it without using the maps to locate the charger. I can’t find it if there is. Like if I want to charge my car at home how would I precondition it? And if you use the map does it precondition the battery automatically? And does it hurt if you precondition and don’t charge the car? I probably have used the navigation to locate the nearest chargers and gone there just to see where they are actually located and how they were set up. The manual is not much help unless I’m looking in the wrong places.
Last edited by Radman991; Dec 30, 2022 at 03:48 PM.
I’ve been reading the manual and fooling around with the settings in the car and need some help on preconditioning the batteries. Is there a way of doing it without using the maps to locate the charger. I can’t find it if there is. Like if I want to charge my car at home how would I precondition it? And if you use the map does it precondition the battery automatically? And does it hurt if you precondition and don’t charge the car? I probably have used the navigation to locate the nearest chargers and gone there just to see where they are actually located and how they were set up. The manual is not much help unless I’m looking in the wrong places.
No. The only way is to select the charger with the EQ section of the nav. Simply enter your destination and it will find the chargers for you. Use the filters to select only DC fast chargers if you dont it will clutter you search with AC chargers. NOTE it isnt perfect. If it doesnt find any use the app on the phone. If that doesnt find anything is Plug Share app with the knowledge that preconditioning will not occur. If the station is far away the battery will warm up a good bit just by operating the vehicle.
No. The only way is to select the charger with the EQ section of the nav. Simply enter your destination and it will find the chargers for you. Use the filters to select only DC fast chargers if you dont it will clutter you search with AC chargers. NOTE it isnt perfect. If it doesnt find any use the app on the phone. If that doesnt find anything is Plug Share app with the knowledge that preconditioning will not occur. If the station is far away the battery will warm up a good bit just by operating the vehicle.
I just drove to a local ChargePoint 6.4 kW free charger to check that out. I did have automatic preconditioning checked off with the navigation function. It says it will automatically precondition when I use the nav function, which I did. But nowhere can I see that it is actually happening. Just wonder how long it takes as this charger is 5 minutes from my house.
Just as an aside, I had my software updated to version E329 yesterday and some functions apparently defaulted to factory. Augmented reality navigation went back to regular for one.
I came across that screen as well, but my concern was how do we know it’s actually happening. When I select an ev charger thru the nav screen I do not see anything that informs me that preconditioning the batteries is actually occurring. And again most of my charging occurs in my unheated garage, currently with temps of 30-45 degrees. I can’t figure a way to precondition the battery in this situation, or even if it’s necessary.
I would imagine heating the batteries to pre-condition would make your mileage bottom out considerably but I agree it would be nice to have some indication it is actually happening.
I just drove to a local ChargePoint 6.4 kW free charger to check that out. I did have automatic preconditioning checked off with the navigation function. It says it will automatically precondition when I use the nav function, which I did. But nowhere can I see that it is actually happening. Just wonder how long it takes as this charger is 5 minutes from my house.Just as an aside, I had my software updated to version E329 yesterday and some functions apparently defaulted to factory. Augmented reality navigation went back to regular for one.
An AC charger does not require conditioning. When you set a DC charger it will have a little animation letting you know its preconditioning but no other info.
I came across that screen as well, but my concern was how do we know it’s actually happening. When I select an ev charger thru the nav screen I do not see anything that informs me that preconditioning the batteries is actually occurring. And again most of my charging occurs in my unheated garage, currently with temps of 30-45 degrees. I can’t figure a way to precondition the battery in this situation, or even if it’s necessary.
I assume charging in your garage would be with an L2 charger. And since the EQS currently limits L2 charging to 9.6KW, I would be surprised if preconditioning made any difference. An easy way to check would be to look at the charging rate in your Mercedes Me Connect APP when starting a charge in your cold garage. Even with a warm car in a warm garage, it can take a minute or two for my charging session to hit 9.6KW, but I think that is just a 'starting charge' overhead. Let us know if you see any 'ramp up' time in a cold garage.
I just drove to a local ChargePoint 6.4 kW free charger to check that out. I did have automatic preconditioning checked off with the navigation function. It says it will automatically precondition when I use the nav function, which I did. But nowhere can I see that it is actually happening. Just wonder how long it takes as this charger is 5 minutes from my house.
Just as an aside, I had my software updated to version E329 yesterday and some functions apparently defaulted to factory. Augmented reality navigation went back to regular for one.
That’s interesting. So how do get back augmented reality?
An AC charger does not require conditioning. When you set a DC charger it will have a little animation letting you know its preconditioning but no other info.
Thank you. I did not know that. This is the type of information I find very helpful but I couldn’t find in the manual.
I assume charging in your garage would be with an L2 charger. And since the EQS currently limits L2 charging to 9.6KW, I would be surprised if preconditioning made any difference. An easy way to check would be to look at the charging rate in your Mercedes Me Connect APP when starting a charge in your cold garage. Even with a warm car in a warm garage, it can take a minute or two for my charging session to hit 9.6KW, but I think that is just a 'starting charge' overhead. Let us know if you see any 'ramp up' time in a cold garage.
Correct, I have a ChargePoint flex. When I first start charging it’s around 9.2 kW and eventually gets up to 9.4 kW max for me.
This is my second attempt to use the 350 kW supercharger and I have as of yet to get greater than 92kW charging speed. Maybe it is because I am starting at 65% SOC, I don’t know. Has anybody been successful achieving 150 kW speed? I don’t have ECO enabled either.
I had this issue at an EA site before. I was lucky enough to have a EA service Tech arrive to service the chargers. My charger was 150KW and charging at 57KW. Usually, with eco on, at this site, I get 106KW. The tech said he had to change out some capacitors and to expect the problem to be resolved when I return. Sure enough, a week later all was fine. I would suggest you call EA when you come across this issue. It seems they can do remote diagnostic and if it appears fine on their end, they will send someone out. Although a tech isn't going to show up when you're there, it helps us all out.
I had this issue at an EA site before. I was lucky enough to have a EA service Tech arrive to service the chargers. My charger was 150KW and charging at 57KW. Usually, with eco on, at this site, I get 106KW. The tech said he had to change out some capacitors and to expect the problem to be resolved when I return. Sure enough, a week later all was fine. I would suggest you call EA when you come across this issue. It seems they can do remote diagnostic and if it appears fine on their end, they will send someone out. Although a tech isn't going to show up when you're there, it helps us all out.
What you wrote ABSOLUTELY makes sense, but lately when I call about slow charging, it seems like their new company line is that it is the car that determines the charging rate. Maybe so, but I have been plugged into a slow charger (38Kw) and moved to the next one and it charged close to 150Kw speed.
I read somewhere that not only is the charging company charged for the energy (Kwh), but on a fast charge, some utilities charge extra for the "surge" on the grid that fast charging causes. The article I read stated this to be expensive. The article suggested batteries at the chargers could charge slowly and then the car's battery could charge from the storage battery.
I think there is a bunch of issues, but more often then not most stations I used in the last few months had some or all of the chargers not working, working slow, or did nor recognize my car. Most times a call helped, but not always.
I would imagine paying the "surge" charge or upgrading the stations with battery packs will be very expensive, but if this doesn't get fixed, electric cars will be limited to people that have access to their own chargers and limit their driving to half of the range so that they can return.
What you wrote ABSOLUTELY makes sense, but lately when I call about slow charging, it seems like their new company line is that it is the car that determines the charging rate. Maybe so, but I have been plugged into a slow charger (38Kw) and moved to the next one and it charged close to 150Kw speed.
I read somewhere that not only is the charging company charged for the energy (Kwh), but on a fast charge, some utilities charge extra for the "surge" on the grid that fast charging causes. The article I read stated this to be expensive. The article suggested batteries at the chargers could charge slowly and then the car's battery could charge from the storage battery.
I think there is a bunch of issues, but more often then not most stations I used in the last few months had some or all of the chargers not working, working slow, or did nor recognize my car. Most times a call helped, but not always.
I would imagine paying the "surge" charge or upgrading the stations with battery packs will be very expensive, but if this doesn't get fixed, electric cars will be limited to people that have access to their own chargers and limit their driving to half of the range so that they can return.
Well, EA and CP has some issues. I have about 9 charging sessions which still show pending (Not charged yet). A couple are back in October. Including the slow session I mentioned which took an hour. The hour session convinced me to install a charger at the house sooner than later. Now that I have, it's been amazing. Also, if EA doesn't recognize your car, start the charge from the EQS navigation menu. I've moved on to other chargers before learning this trick.
Well, EA and CP has some issues. I have about 9 charging sessions which still show pending (Not charged yet). A couple are back in October. Including the slow session I mentioned which took an hour. The hour session convinced me to install a charger at the house sooner than later. Now that I have, it's been amazing. Also, if EA doesn't recognize your car, start the charge from the EQS navigation menu. I've moved on to other chargers before learning this trick.
Ha! I just got billed yesterday for a charge on August 9 in Vancouver, BC.
I need to learn how to do the charge from the NAV screen. The phone rep from EA walked me through it once, but my memory is not that great and forget how to do stuff like that if I don't do it often. As it has been happening too often, perhaps I should learn again and commit it to memory.
“…but if this doesn't get fixed, electric cars will be limited to people that have access to their own chargers and limit their driving to half of the range so that they can return.”
You just described me. And, I knew when I ordered my car it would be this way. No problem. For long distances, it’s either my wife’s Rx Lexus or our ‘18 S560, that has just reached 25,000 on the odometer.
@pmichaelmd You will get the high rate of charge only when your battery is nearly depleted. The charge tapers down as you go. Check Bjorn Nyland's youtube channel, he has lots of charging sessions recorded on various cars. After a while in EVs I learned to trust the estimated range and plan to arrive at the next charging stations around 10%. I then only charge to what is needed to get to next charger + 10%. The only time I charge more on a trip is if I take a long break for lunch or dinner.
Re: preconditioning I hope MB will update their software to follow Tesla and Porsche - when selecting a charging station in Navigation it automatically turns on preconditioning. As far as I can tell now, the only way to have preconditioning in the EQS is to have the Navigation select the particular charger you want (you can delete the charging stations you do not want in the menu).
Re: knowing it is prewarming - if you select to display the current Wh/mi usage, it suddenly increases 5-10 minutes before destination to do the prewarming. It will also drop your estimated range quite precipitously in cold weather...
@pmichaelmd You will get the high rate of charge only when your battery is nearly depleted. The charge tapers down as you go. Check Bjorn Nyland's youtube channel, he has lots of charging sessions recorded on various cars. After a while in EVs I learned to trust the estimated range and plan to arrive at the next charging stations around 10%. I then only charge to what is needed to get to next charger + 10%. The only time I charge more on a trip is if I take a long break for lunch or dinner.
Re: preconditioning I hope MB will update their software to follow Tesla and Porsche - when selecting a charging station in Navigation it automatically turns on preconditioning. As far as I can tell now, the only way to have preconditioning in the EQS is to have the Navigation select the particular charger you want (you can delete the charging stations you do not want in the menu).
Re: knowing it is prewarming - if you select to display the current Wh/mi usage, it suddenly increases 5-10 minutes before destination to do the prewarming. It will also drop your estimated range quite precipitously in cold weather...
Love his videos, watched a few of them. I have as of yet to be bold enough to let the range drop to 10% when traveling but will probably let it get close on my next road trip. Keeps things exciting!!
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