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[nekodan]

I have a Tesla Wall charger at home (240V, 48A, on a 60A 240V circuit). I bought a Tesla -> J1772 adapter on Amazon (XINTOU, 240V, 60A). I plugged it into the bike (about 50% SOC) and everything seems to charge fine. But noticed on the dashboard, it said 66A and 6.9KW. 6900 / 120V = 57.5A and 6900 / 240V = 28.8A. So I don't really understand where the numbers come from. I felt the adapter / cable after 2hrs of charging and it was barely warm. No errors and battery was at 100%.

My primary concern is that the adapter stated it's a max of 60A/240V, which is 14kW of power. Do you think that there's an issue there with what the bike stated and overwhelming the adapter? Thanks!

[Oilcan]

The amp and kw shown on the instrument panel are the output of the onboard charger into the battery pack. Not the current from your Tesla wall mounted EVSE.

[TheRan]

Yeah what Oilcan said, it's the current into the battery. 6900/66 is 104.5V which does equate to around 55%, fully charged it's a smidge over 116V.

[MVetter]

The bike's operating voltage is between ~95-116 vdc. The voltage value will rise during the charge session as amps are added.

The bike, at 55%, is about 104vdc. Your 6.9kW, or 6900 Watts divided by 66 Amps confirms that. 6900/66=104.54545454

[DonTom]

I have a Tesla Wall charger at home (240V, 48A, on a 60A 240V circuit). I bought a Tesla -> J1772 adapter on Amazon (XINTOU, 240V, 60A). I plugged it into the bike (about 50% SOC) and everything seems to charge fine. But noticed on the dashboard, it said 66A and 6.9KW. 6900 / 120V = 57.5A and 6900 / 240V = 28.8A. So I don't really understand where the numbers come from. I felt the adapter / cable after 2hrs of charging and it was barely warm. No errors and battery was at 100%.

My primary concern is that the adapter stated it's a max of 60A/240V, which is 14kW of power. Do you think that there's an issue there with what the bike stated and overwhelming the adapter? Thanks!

On the AC input side, you're less than 8KW or perhaps around 33 amps max for your AC input current draw.  FWIW, I also use a Tesla Wall Connector and Tesla Tap at the same max currents as yours (240V, 48A, on a 60A 240V circuit).


-Don-  Auburn, CA

[nekodan]

Thanks for all the informative responses! I’m feeling smarter and less anxious!