[HN Gopher] Drawing power out of CCS port
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       Drawing power out of CCS port
        
       Author : faebi
       Score  : 15 points
       Date   : 2025-05-25 15:28 UTC (7 hours ago)
        
 (HTM) web link (openinverter.org)
 (TXT) w3m dump (openinverter.org)
        
       | aetherspawn wrote:
       | > Background: The "official" CCS does not provide the possibility
       | to draw energy out of the car. This is in contrast to the
       | CHAdeMO, which prepared this topic from the beginning.
       | 
       | Incorrect, and there is no need for this hackery. V2G over CCS2
       | was standardised in ISO 15118-20 for example when the OP wrote
       | this, and a lot of cars will happily allow bidirectional power
       | transfer (taking energy out) using the proper command.
       | 
       | The difference is, using the proper BPT method is designed to do
       | this without damaging or bricking the battery and adds the
       | necessary protections ie the car will disable BPT once the
       | battery begins to run too flat to support it, and it will send
       | the external device a power limit which it must follow.
       | 
       | Virtually all battery protections are disabled during pre-charge
       | (the hack OP is using) to the point where you can probably run
       | individual cells to 0V and then you'll need to throw out your
       | car. That's why the well thought-out models (Tesla, Hyundai)
       | don't allow pre-charge for very long (seconds or minutes) whereas
       | the MG, with its buggy and poorly-designed software, had no time
       | limit.
        
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       (page generated 2025-05-25 23:01 UTC)