Spintend 75V/200A Ubox (Based on 75V/300A VESC)and Uni1 Introduction !

@RyEnd the first batch of Uboxes had cut out issues under high load. That issues was fixed by adding a diode and I think for those who ordered from the first batch got that diodes sent (or could sent back their units to get it fixed). To me it looks like those are diodes and you got the parcel from somebody who already ordered a Ubox from the first batch.

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I have enough used ones I could let go for less than that haha

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haha but the other cells are fresh, ideally would take the cells from the new vender and distribute them evenly.

tbh if your cells are under 100 cycles I bet they would be ok to series but I would not mix them into the P-groups.

Hmm yeah just make my 12S7P and a 4S7P out of your used cells and series them would be cheaper for the experiment but I feel it would become permanent.

Yeah I mean if all the rest are new probably not worth it, I am not sure of the exact cycle count

Don’t lie to yourself, there is no chance it wouldn’t become permanent lmao

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yeah lol only like $35 max saved isn’t worth it when I can get all new ones

Probably not haha I sold some to someone else but their other cells were used too

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You were right. Remote should be set as ppm remote and that leaves bt module free for other stuff!

I had first test ride on 10s setup. Phase wires from one motor got disconnected during ride and ubox handled it very well. One motor kept still spinning. No damage on ubox. Yes, phase wires disconnecting was totally intentional, 100%, I swear :sweat_smile::sweat_smile:

Really like it so far. Next tests are gonna be on 13s and 15s.

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Just normal test procedure :man_shrugging::joy:

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Yes the TB6 can also handle this well :innocent: so I hear :smile: sudden unplugging/partially connected xt60 won’t kill it either!

Not sure about that. If the disconnect happens in the moment you are braking that could pop some electronic.

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Can others check their readings please

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So are we pushing the reliability at 16S? I see that’s what the demo videos are testing at, but for reliability sake. 15S a better option?

If 75V is the cap 16S leaves ~10% headroom which only slightly better than 13S on 60V esc’s which is known to create issues for some.

Anyone testing 15S/16S currently?

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I will be in a few days. Building a 4s brick to make my 12s a 16

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Others did that before.
You can just check some comments above.

Personally I guess 15s will be the sweet spot, but specs say shouldn’t exceed 80V, so there is a bit of headroom left even with 16s.

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I will kick it hard with a 16S7P e-scooter @2x120A, so we will see.

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My guess is that it can do barely half of that without some serious extra cooling.

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Only @stratoglide and @Scepterr it looks like did, could use more data for science IMO like kev said

Ah! So 16S is within the 85% range. Thanks for that clarification!

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SO, will I be able to use 12V output without Uni1 Remote?

I dont need it turned on/off I would like it to be on all the time?

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