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Mk4 negative for charging

jmkgreen
jmkgreen
in Ford Focus Club

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On 11/10/2023 at 3:24 AM, dolly2006 said:

Here where fast regen allowed is on and charged capacity ran up to 80% from 70% in 20 minutes commuting.

With original value 1C1C it was crawling around 66% and no significant rise.

IMG_6294.png

Hey, I have a MK4.5 Focus ST and I’m having the same issue, car barely charges battery and is always in ‘conventional charging’ never seen the fast regen allowed. I’m attempting to update my battery type as you described to hopefully get the fast regen allowed on start stop city drives but Forscan only shows 3 battery types (none near my current battery ratings) and I’m unsure what BCM hex relates to the battery type or what id even change it to. My current battery is a factory fitted Varta 70ah 700amp EFB, do you have any suggestions on how I could get this updated? 🙂 

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    • unofix
      unofix

      Maybe we are looking at this the wrong way round ? The Names of the ‘BMS’ ‘SOC’ ‘BCM’ and ‘Battery’ have been changed to protect their identities. Once upon a time ‘Jones the Steam’ was told

    • Tizer
      Tizer

      Correct, but you have got to feel sorry for The Fat Controller and Jones the Steam. They both know what should be done but the have their hands tied behind their backs by the Supreme Leader, Mr Green.

    • StephenFord
      StephenFord

      This thread is a real eye opener! How to charge the battery on a nearly new ca??. Something I do every couple of months on mine, BUT it's 16 years old. Mehhh... you can keep 'new' cars, seem more trou

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    1 hour ago, Reece438 said:

    Hey, I have a MK4.5 Focus ST and I’m having the same issue, car barely charges battery and is always in ‘conventional charging’ never seen the fast regen allowed. I’m attempting to update my battery type as you described to hopefully get the fast regen allowed on start stop city drives but Forscan only shows 3 battery types (none near my current battery ratings) and I’m unsure what BCM hex relates to the battery type or what id even change it to. My current battery is a factory fitted Varta 70ah 700amp EFB, do you have any suggestions on how I could get this updated? 🙂 

    In my experience the PCM/BCM decide when the Charging Modes other than Conventional are used and this is irrespective of whether the car is used in Town or Motorway driving. It always starts off in Conventional on mine as far as I know.

    If your Battery is not in a very good condition then it will charge slowly.

    FORScan used to have lots of Battery sizes and even an AGM option in the Drop Down Menu but most of them were removed because they were wrong.

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