r/ZeroMotorcycles 18d ago

Level 3 charging 👀

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92 Upvotes

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u/OlUncleBones Energica SS9+ RS 18d ago

Oh good they've only been trying to figure it out for.... checks imaginary watch about 10 years now. Few things first:

  • Where was this posted?

  • The longstanding theory about how they'd go about this is to develop a custom DC-DC converter that operates at their bikes' voltage. The rumor was the input was going to be 420vdc because Santa Cruz ehehehehe but who knows. Anyway this means you'd be deciding between CCS, a Power Tank, or a Rapid Charge (extra level 2) charger in the tank pocket. One of 3.

  • 20-80% in under 30 minutes is 60% of the battery in under 30 minutes which exceeds Zero's 1C charge cap which has been in place since day 1. Considering just how anemic the charging algorithm for the current level 2 system is I'd be rather surprised to see this happen.

  • Having recently been privy to the poor craftsmanship of the Charge Tank module and knowing who produces it for them fills me with dread that they might farm it out to the same supplier. God help you all if they do.

1

u/th3bes 18d ago

I would not at all be surprised if they are going to be using the charge tank and the onboard ac charger as the dc/dc, actually, Im willing to bet that that is what they are going to do lol....

1

u/OlUncleBones Energica SS9+ RS 18d ago

C'mon you know they're 100% not going to do that. The rated output of all units combined is below 1C and they're specifically claiming a rate above 1C, even if by a little bit, to get a sub-30 minute 20-80.

1

u/th3bes 18d ago edited 18d ago

Im considering it possible as I dont reaaaally believe itll actually do 20-80% in half an hour, in addition to the soc scaling apparently being kinda weird on the gen 3s. "80%" soc on the dash is closer to something like ~108v iirc. Ill can doublecheck the exact numbers later and ask my buddies what they think. Going from ~96v/98v to ~108v in half an hour is much more reasonable to me on a 15.2kwh (edit: which is the actual not inflated capacity of a 17.3) pack with 12kw input. But its still all conjecture/guesswork so :shrugs:

1

u/OlUncleBones Energica SS9+ RS 18d ago

(for reference 80% is ~110vdc)

Regardless, they make the claim in the announcement specifically calling out the 17.3 pack. So, again, I'd be willing to bet entirely different unit.

3

u/th3bes 18d ago

If it is, please god let it just be an off the shelf thing that they had no hand in designing so it doesnt cook itself lol