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NikB
Rank 2
April 30, 2024
Solved

Mercedes max. charge level discussion- Any workarounds?

  • April 30, 2024
  • 46 replies
  • 3595 views

I have read through some of the forum topics and it is well-documented that Mercedes and Indra/OVO has an as yet unresolved problem, that being the maximum charge level is re-set to 50% by software Gremlins.

I wanted to start a dedicated forum topic about this issue and keep it going until it is resolved, because this is not a minor inconvenience. It would be THE reason for me to not have ordered and signed a finance engagement for a Mercedes EV, or paid over £1000 to OVO for a charger. In my circumstances, charging at home is a key reason to have an EV. Without that, I would go back to a diesel tomorrow.

I will update the thread when Mercedes replies to me by email, now that I have been able to pinpoint the issue for them. So far (before I knew there was a big problem), they have replied quickly but with the generic “reinstall the Mercedes Me app - send fault logs - what phone are you using” etc etc etc.

So, I invite you to write your workarounds (if there are any), your communication with Mercedes and any other useful info on this topic to help other Mercedes EV owners live with this extremely irritating problem.

Best answer by Emmanuelle_OVO

Updated on 26/01/26 by Abby_OVO

Hey @NikB,

 

This was the last update I received from the team:

 

Its a known issue with Mercedes still being in the Beta testing phase unfortunately. They are still working on it.

 

In order to stop a charge on Mercedes vehicles, we set the in-vehicle max state of charge to 50% which then shows in the Mercedes vehicle and app. To start charging again, we change the in-vehicle max state of charge back above 50% to the desired level. Unfortunately we are seeing that the increase from 50% to 100% state of charge isn’t being applied reliably on the Mercedes app.


If plugging in when the vehicle is under 50% in the afternoon/evening, we’d advise a workaround of checking the Mercedes app before you go to bed and manually changing the maximum state of charge back up to 100%. This should ensure the vehicle is charged correctly by the ready by time. We appreciate this isn’t ideal, so we’ve got our developers working on a solution to ensure reliable charging in the future.

 

 

There may be some more advice on the above topics. 

 

To update all Forum Members who are part of the Mercedes / Beta Pilot:

 

This is still a pilot, and some issues - like the 50% total charge problem - may take time to resolve. As a result, the Charge Anytime team is unable to provide further updates at this time.

 

If the limitations you're experiencing outweigh the benefits of the Charge Anytime add-on, we recommend leaving the pilot for now while we work on improving the service.

 

We’re sorry for any frustration this may cause. Please keep an eye on the Forum for updates - we’ll share any new developments as soon as we have them.

 

You can exit the Mercedes Beta Pilot at any time by taking the following steps:

 

  • Open the OVO Charge Anytime app
  • Click on the "Account" tab in the bottom right
  • Click on the User icon in the top left
  • Click the "Delete account" link
  • Select a reason for leaving and click "Continue"
  • Your app account will now be deleted and there will be no further connection or interaction between your car and the OVO system
  • Note: You will still be credited for any smart charging that you have done up to this point

46 replies

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Newcomer
rpg28
Newcomer
December 27, 2024

Hi Ovo Forum

I first posted on this topic thread 4 months ago and have been keeping an eye on comments. Sad to say our Mercedes EQB continues to have this issue on a daily basis still 4 months on. Sometimes I leave the Mercedes app alone and the Charge Anytime app will mysteriously increases the max charge but stops at around 80%, which is still short of the limit I’ve set in the Charge Anytime app at 90% for example. Other times the Mercedes app reverts to 50% and I’ve woken up the next morning to find the car hasn’t charged at all and stopped at 50%. It’s incredibly unreliable and frustrating. Charge Anytime team - is there anything you can do to help? 
 

 

Blastoise186
Super User
Blastoise186Super User
Super User
December 28, 2024

Hi ​@rpg28 ,

I’m afraid the Charge Anytime team doesn’t post directly to the Forum - they usually route their responses via the Forum Moderators or through a Forum Volunteer such as myself.

If you need to speak to that team directly, 0330 175 9678 is the fastest way.

Securing energy by zapping security bugs... For that is The Blastoise Way! Remember, I'm just like you - AI Powered Evil Geniuses aren't Staff!
    S
    Newcomer
    Steve birkbeck
    Newcomer
    January 25, 2025

    OVO Charge Anytime keeps setting my Max charge to 50%, overriding the 80% I set manually.

    How can I stop it doing this ?

    It’s really inconvenient being able to use only half the battery.

    My set up is Mercedes 250+ with ease EV charger

    Blastoise186
    Super User
    Blastoise186Super User
    Super User
    January 25, 2025

    Hi ​@Steve birkbeck ,

    This is intended and expected behaviour because you have a Mercedes. MercedesMe doesn’t offer a proper way to control charging, so this workaround is the best OVO can do to make it work at all at this time.

    When charging is active, the limit will increase to your preferred level - so you will get a full charge if that’s what you want.

    Securing energy by zapping security bugs... For that is The Blastoise Way! Remember, I'm just like you - AI Powered Evil Geniuses aren't Staff!
      Ben_OVO
      Community Manager
      Ben_OVO
      Community Manager
      January 27, 2025

      Hi ​@Steve birkbeck,

       

      A warm welcome to the OVO Forum, thank you for your post. I can see ​@Blastoise186 has replied helpfully to you, and I just wanted to share a previous forum topic with you as you might find some of the information helpful

       

      Cheers!

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      Newcomer
      Steve birkbeck
      Newcomer
      January 28, 2025

      Thanks for this, Blastoise186

      And also to  Ben_OVO  for looping me into the previous forum topic : I still have the 50% Max charge problem, so will share my info on that topic.

      Very helpful

      Where can I see the log of when each charge happened, with amount and cost ? I would like to compare Charge Anytime with what I used to do before i.e. simply use the easee schedule to start charging at midnight.

      S
      Newcomer
      Steve birkbeck
      Newcomer
      January 28, 2025

      Hi all, I raised a separate issue with this 50% Max charge problem, and was referred to this to discussion - so It ought I’d share my details here.

      My set up : Mercedes-Benz EQA 250+ Sport with easee charger. Apps :  Merceds-Benz, Easee, OVO ChargeAnytime

      I’ve been doing some overnight charges to try and work out what happens - I always set “Ready by 06:40 tomorrow” in ChargeAnytime app.

      Sunday night it charged up to 50% then stopped - not good.

      Next day I thought I’d try to use Mercedes app to change Max charge, but worryingly I can no longer do this : Ovo seems to have taken complete control !

      So I plugged it in again and it started charging, and somehow Max Charge was set to 100%

      I left it overnight last night to see what happened, and this morning, according to the apps :

      Mercedes : 50% Charging process completed & Max Charge back to 50%

      Easee : Completed

      ChargeAnytime : “Charging next after 00:00”

       

      I still cannot reset the Max charge using the Mercedes app - I usually go for 80%, and 100% if a long trip planned.

       

      How can I get this to charge more than 50% ?

      Blastoise186
      Super User
      Blastoise186Super User
      Super User
      January 28, 2025

      It’ll all be in the Charge Anytime app IIRC

      Securing energy by zapping security bugs... For that is The Blastoise Way! Remember, I'm just like you - AI Powered Evil Geniuses aren't Staff!
      Blastoise186
      Super User
      Blastoise186Super User
      Super User
      January 28, 2025

      Sounds like the team needs to dig the logs! Try 0330 175 9678 Option 2

      Securing energy by zapping security bugs... For that is The Blastoise Way! Remember, I'm just like you - AI Powered Evil Geniuses aren't Staff!
      S
      Newcomer
      Steve birkbeck
      Newcomer
      January 29, 2025

      Thanks - what is “IIRC” and where can I find that in the Charge Anytime app ?

      Show more replies
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