Battery Clearing House SV-BA10 13s 20Ah Battery

Seems like shorting the two other pins limits the current to something super low. Seems like it’s time to bypass discharge.

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Hmm at least we know these things were really just barely used.

I do really wish I got two instead of just one. 2KWh easy top mount + 1500Wh internal would be insane.

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I believe the discharge works if it’s plugged in after it’s turned on

if anybody needs a stoba shell or BMS or both, let me now I’ve got a few spares, $20 + ship

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I tried both combinations, but even though it worked, it was throttling the current (BMS made a clicking sound). I now just bypassed discharge and it works just fine. These ebike controllers have fairly conservative LVC anyways.

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what current were you trying to pull?

Close to nothing. I was using a 26A rated ebike kit controller (AFAIK their ratings are for peak :rofl:)

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And just spinning the wheel with no load.

I’m making a 20s right now
though maybe 18s, I gotta turn 2 sideways to fit 20s

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What controller are you using?

phaserunner from grin
https://www.ebikes.ca/phasernuner-mt-motor-controller.html

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Fancy!
I just ordered Luna’s small sine controller for their cyclone that should do 40A cont. at $75 it’s worth a shot.

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(Also 20s)

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I’m gonna get a feel for it at 12S, when I start maxing it out or blow the vesc I’ll jump to 20S and phaserunner :yum:

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For me It only shut off when it was connected to any load on startup. If you turn the battery on with your switch, and then connect it to your load it’ll remain on.

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I did that. And it remained on, but heavily current-limiting. It’s now bypassed, but the switch for charge-activation is still neat. :slight_smile:

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@Battery_Mooch would you be willing/interested in testing a cell from this battery? can send 1 or 2

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Thanks for the offer! I have a huge backlog right now though and will only be adding to the queue if it’s a cell that a big part of the community wants to see tested. Just too much testing to do and too little time.

LOL…I need a sponsor so I can do this full time!

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I just did a puncture test with 2 charged cells (one 4.2v top and the other 3.8v bottom)and Stoba doesn’t mean safe lol. Kinda blew up in my face.
Tested with a 0.8 Ohm load to show how they react when punctured under load. I also re-wired the module in series so the load was double what the cells would see in the normal configuration.
At 7.2v ; (7.2V)/0.8010Ohms = 8.98 amps
At 5v it’s still running 6 amps through the cells.
The bottom cell doesn’t seem to have ruptured but it didn’t react when I punctured it after.
When the cell stopped smoking I temped it at 545F (285C)


image

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