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I wouldn't imagine any EV charger would be triggered by a crude dummy load, it would almost certainly require detection of voltage from the battery, and very probably some kind of two way communication.
However, 73V isn't much of an EV charger - so who knows how it might be designed?.
As far as I can tell its an electric bike charger or similar, and they appear to just have a two wire output.
If it needs a voltage back from a battery to enable it, that would presumably be a reasonably high voltage, as the battery appears to be 60V nominal with 73V chargers.
As far as I can tell its an electric bike charger or similar, and they appear to just have a two wire output.
If it needs a voltage back from a battery to enable it, that would presumably be a reasonably high voltage, as the battery appears to be 60V nominal with 73V chargers.
If it's only two wire then it's probably just going to detect the voltage when connected (I'm presuming it doesn't just sit there outputting full voltage with no load?) - I'm currently playing with Li-Ion charging and buck/boost converters, and it's a matter of choice what threshold voltage you detect. My current code detects >20% of the maximum voltage in order to initiate charging, but is simply set in the code.
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