E-ODIN - Diskussionsthread

[bob2.0]

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I thought the BMS could shut off an over-voltage/over-charge scenario.
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Yes, why shouldn't it?

Well, there would be transistors (presumably) in the circuit, and those would be current limited.

So, there would be transistors going in on the charge port, and transistors coming out on the battery power terminals. And I would presume they would be cost-down so that the transistors on the charge circuit would not be particularly large?

That's why I though charging was current-limited, so that the current does not exceed the input transistors in the BMS on the charging circuit (so that it can cut them off, if it needs to)?

[bob2.0]

I measured the cable cross-section for the charging port, it is approximately 4 mm². So the charging port ist fit for about 40A.
This aligns with the types of chargers that DAYI previously offered: the standard 10A charger (which is included with the bike), a 25A model, and even a 40A model.
However, as far as I recall, the 40A model was subsequently discontinued.

I am being offered (24h offer) a 20% discount on Aliexpress, so I am pondering getting one of these.

I am still wary of overloading the charger circuit, but if you say 25A was once an optional charger (not withdrawn), then I guess I have to trust that the BMS protection transistors are at least rated (as you say, maybe 40A rated, but pushing them?).

So, 24h to decide on the saving.

There is a specific benefit/need. I have an 80 mile trip I do on this bike regularly, and I stay overnight or linger to charge up, but doing the round trip in one day is not practical with anything less than a 20A charger.

[jeff-jordan]

A charging current of 25 A is no problem. I have installed my 3.3 kW charger in the right-hand side case and use it regularly (twice a week). It charges at up to 40 A.