Pre Conditioning HV Battery
Thread Starter
Member
Joined: Jun 2012
Posts: 144
Likes: 13
From: New York
2024 EQE 350 4matic / 2019 911 Carrera T
Pre Conditioning HV Battery
Hello All,
I am a bit confused and hopefully someone can chime in and help. I am going on a small road trip and expected weather will be below zero (F).
My plan is to preheat the cabin about an hour before departure while connected to the level 2 charger in my house.
Does this set up actually warm up the HV battery? If i am understand this correctly one off the largest loss in consumption is the actual warming of the HV battery?
Perhaps someone can help me understand if my logic is correct?
TIA
I am a bit confused and hopefully someone can chime in and help. I am going on a small road trip and expected weather will be below zero (F).
My plan is to preheat the cabin about an hour before departure while connected to the level 2 charger in my house.
Does this set up actually warm up the HV battery? If i am understand this correctly one off the largest loss in consumption is the actual warming of the HV battery?
Perhaps someone can help me understand if my logic is correct?
TIA
Senior Member
Joined: Mar 2023
Posts: 368
Likes: 136
EQE350 SUV 4MATIC
Pre-conditioning only works with the interior. If the car is out in the cold, and plugged in, you could set the pre-conditioning for an hour before departure then again for the departure time. This may allow everything in the interior to stabilize at your required temperature.
Pre heating of the battery is performed when Intelligent Navigation is active and a high speed charging spot, on route, has been identified. The system will warm start the warming of the battery at the appropriate time prior to arrival and the start of charging. You cannot manually set or activate the battery conditioning.
Pre heating of the battery is performed when Intelligent Navigation is active and a high speed charging spot, on route, has been identified. The system will warm start the warming of the battery at the appropriate time prior to arrival and the start of charging. You cannot manually set or activate the battery conditioning.
Thread Starter
Member
Joined: Jun 2012
Posts: 144
Likes: 13
From: New York
2024 EQE 350 4matic / 2019 911 Carrera T
Great thank you.
Please forgive me, I know heating and cooling is a huge energy drain, but does the HV battery preconditioning use as much energy (thru the Intelligent Nav)?
I am trying to understand when they say pre condition the cars on cold days to maximize the range. Clearly that is to offset the energy loss from heating/cooling cabin.
I know the HV battery has a difficult time with the cold, but is the car using energy to warm the battery while driving, or is that activated only during request via Intelligent Nav
Please forgive me, I know heating and cooling is a huge energy drain, but does the HV battery preconditioning use as much energy (thru the Intelligent Nav)?
I am trying to understand when they say pre condition the cars on cold days to maximize the range. Clearly that is to offset the energy loss from heating/cooling cabin.
I know the HV battery has a difficult time with the cold, but is the car using energy to warm the battery while driving, or is that activated only during request via Intelligent Nav
Senior Member
Joined: Mar 2023
Posts: 368
Likes: 136
EQE350 SUV 4MATIC
I do not have definitive answers for you, only what I have read in various forums and driving experience.
Knowing that pre-conditioning of the interior does not include battery warming then there is very little additional control opportunities. Pre-conditioning the car while it is plugged in will provide additional range, rather using energy from the battery to perform the initial heating/cooling of the interior.
The car may be using some energy to make sure that the battery is in optimal condition but you have no control over this. The battery will take longer to charge on a high speed charger In cold conditions if the battery has not been preheated. Using Intelligent Navigation is the only way to activate this function.
If you need to stretch the range in very hot or cold conditions then drive in ECO mode, avoid driving at high speeds, and limit the use of heating or cooling of the interior.
Considering that you have paid big bucks for a high end vehicle make use of its features and do not sweat the small stuff. Having to make one or more 15-20 minute charging stops on a long drive and what this may cost compared to how much the car costs should be trivial. Just drive and enjoy.
Knowing that pre-conditioning of the interior does not include battery warming then there is very little additional control opportunities. Pre-conditioning the car while it is plugged in will provide additional range, rather using energy from the battery to perform the initial heating/cooling of the interior.
The car may be using some energy to make sure that the battery is in optimal condition but you have no control over this. The battery will take longer to charge on a high speed charger In cold conditions if the battery has not been preheated. Using Intelligent Navigation is the only way to activate this function.
If you need to stretch the range in very hot or cold conditions then drive in ECO mode, avoid driving at high speeds, and limit the use of heating or cooling of the interior.
Considering that you have paid big bucks for a high end vehicle make use of its features and do not sweat the small stuff. Having to make one or more 15-20 minute charging stops on a long drive and what this may cost compared to how much the car costs should be trivial. Just drive and enjoy.
MBWorld Fanatic!
Joined: Nov 2013
Posts: 1,030
Likes: 492
From: Louisville, KY
2023 EQE350 4MATIC, 2023 EQE 350 4MATIC SUV, 2015 E250 BlueTEC 4MATIC, 1995 E300 Diesel
When you use the navigation system, it will estimate your power consumption and includeany energy required to heat the HV battery in charging stop and SoC estimates. It's quite accurate. We did a 10-hour road trip to Michigan in cold weather recently and it did a great job in estimating power consumption and preconditioning the battery so we had full-speed charging sessions.
Senior Member
Joined: Mar 2023
Posts: 368
Likes: 136
EQE350 SUV 4MATIC
@ehildum not sure if you are referring to the OP or my post. I suggested two preconditioning events, the first an hour before departure and the second for the departure time. Yes, the HVAC does a good job of heating or cooling. I am speculating that there could be areas of the car below the surface that radiate hot/cold in extreme conditions that could benefit from extra treatment so that the HVAC does not have to work as hard at departure. This is an attempt to squeeze out the maximum range but that not the right way to think about driving an EV.
Trending Topics
Junior Member
Joined: Sep 2023
Posts: 49
Likes: 5
From: Fort Lauderdale
2023 EQE 350+ SUV
Hi, I’m not a specialist here, but noticed this thread and have an input.
How much would it change the Battery Temperature when You set your final Charging Time ( I guess 100% for a Road Trip) to the departure Time. Not the Preheating, I’m talking HV Battery Recharging.
Should't that give the Battery some Temp to be happy when ready to take off?
Thanks, HF.
How much would it change the Battery Temperature when You set your final Charging Time ( I guess 100% for a Road Trip) to the departure Time. Not the Preheating, I’m talking HV Battery Recharging.
Should't that give the Battery some Temp to be happy when ready to take off?
Thanks, HF.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
MBWorld Fanatic!
Joined: Nov 2013
Posts: 1,030
Likes: 492
From: Louisville, KY
2023 EQE350 4MATIC, 2023 EQE 350 4MATIC SUV, 2015 E250 BlueTEC 4MATIC, 1995 E300 Diesel
Hi, I’m not a specialist here, but noticed this thread and have an input.
How much would it change the Battery Temperature when You set your final Charging Time ( I guess 100% for a Road Trip) to the departure Time. Not the Preheating, I’m talking HV Battery Recharging.
Should't that give the Battery some Temp to be happy when ready to take off?
Thanks, HF.
How much would it change the Battery Temperature when You set your final Charging Time ( I guess 100% for a Road Trip) to the departure Time. Not the Preheating, I’m talking HV Battery Recharging.
Should't that give the Battery some Temp to be happy when ready to take off?
Thanks, HF.
Junior Member
Joined: Sep 2023
Posts: 49
Likes: 5
From: Fort Lauderdale
2023 EQE 350+ SUV
Hi, You are entirely correct in your last Post, but.
The Thread Starter was asking about the Point of time while Home Charging still plugged in. Not while driving.
My Thought or Idea was to help with HV Battery Temperature while Home charging. In Eco Charging mode one can set it to have the car finish Charging at a set Time. If You set that to the Trip Starting Time, the Battery should be doing still some last bit of Charging and thus keeping the HV Battery Temp at least a bit higher that 0F.
The Cabin Temperature Pre-Climate control is a separate entity. Only Question here would be, Is the Car taking all Energy needed for preheating the Cabin from the Home Power source straight or looped through the Battery thous warming it a bit too.
The Thread Starter was asking about the Point of time while Home Charging still plugged in. Not while driving.
My Thought or Idea was to help with HV Battery Temperature while Home charging. In Eco Charging mode one can set it to have the car finish Charging at a set Time. If You set that to the Trip Starting Time, the Battery should be doing still some last bit of Charging and thus keeping the HV Battery Temp at least a bit higher that 0F.
The Cabin Temperature Pre-Climate control is a separate entity. Only Question here would be, Is the Car taking all Energy needed for preheating the Cabin from the Home Power source straight or looped through the Battery thous warming it a bit too.
MBWorld Fanatic!
Joined: Nov 2013
Posts: 1,030
Likes: 492
From: Louisville, KY
2023 EQE350 4MATIC, 2023 EQE 350 4MATIC SUV, 2015 E250 BlueTEC 4MATIC, 1995 E300 Diesel
Hi, You are entirely correct in your last Post, but.
The Thread Starter was asking about the Point of time while Home Charging still plugged in. Not while driving.
My Thought or Idea was to help with HV Battery Temperature while Home charging. In Eco Charging mode one can set it to have the car finish Charging at a set Time. If You set that to the Trip Starting Time, the Battery should be doing still some last bit of Charging and thus keeping the HV Battery Temp at least a bit higher that 0F.
The Cabin Temperature Pre-Climate control is a separate entity. Only Question here would be, Is the Car taking all Energy needed for preheating the Cabin from the Home Power source straight or looped through the Battery thous warming it a bit too.
The Thread Starter was asking about the Point of time while Home Charging still plugged in. Not while driving.
My Thought or Idea was to help with HV Battery Temperature while Home charging. In Eco Charging mode one can set it to have the car finish Charging at a set Time. If You set that to the Trip Starting Time, the Battery should be doing still some last bit of Charging and thus keeping the HV Battery Temp at least a bit higher that 0F.
The Cabin Temperature Pre-Climate control is a separate entity. Only Question here would be, Is the Car taking all Energy needed for preheating the Cabin from the Home Power source straight or looped through the Battery thous warming it a bit too.
