Something bizarre is happening.
My Stormcore reports battery voltage is fine:
This manifests as hitching and cutting out if I try to ride it.
The actual battery voltage according to the bms is barely dropping at all.
Wheels still:
Wheels turning:
I would think thats an ESC issue. Have u done any troubleshooting w the Lacroix peeps?
No I’m hoping it’s something simple before I go down that path.
A simple check could be to check your battery connection to the ESC, make sure it’s solid. Could be a loose or bad connection and so it reads fine until you start trying to draw real power in which it actually can’t.
I assumed he’d already done that but ya, that’s the first place to start. Cold welds would be a prime culprit. @GnomeMeansNo did you build your own pack and solder your own connectors?
Pack was bought from Propulsion Boards and made by @A13XR3.
Seems good quality.
Looking at the connectors they appear nice and shiny:
u set the correct series count in vesctool? might wanna check that, and also check if the cut off start and end values are still within safe range
Ya he’s an experienced battery builder. You’re looking at the wrong end of the connectors though. You want to check the solder joints. Even w an experienced builder a joint could get damaged or could have been missed. That’s gonna be a pain w those panel mount pass throughs.
I’m assuming you get proper voltage at your main discharge terminals?
What’s the smart bms cell data look like?
HOLY SHIT YOU GUYS I figured it out.
I took apart my other board to try that battery and it worked fine.
Then I realized… The socket slid in further on the battery that works.
The first battery just needs a serious fuckoff push to seat all the way in:
WRONG (there’s a “bumpstop” here that makes it feel like it’s fully seated):
RIGHT:
The antispark connector has two rings on one side down inside of it and it looks like the inner ring is much tighter than the outer one.
I think what I was seeing was only the outer “antispark first touch” ring was touching so only the power that could go through the antispark diode was feeding the ESC - and that’s not much.
I’m glad this didn’t break anything.
u may or may not have pop that resistor inside…
Ya you may consider changing the female XT90S. Glad it was easily solved 
Meh, once it’s plugged in it doesn’t matter.
