setting the balance turn on voltage to 3.7V (default was 4.0V) is that a bad thing?
4.0 is about what you want as balancing at lower voltages can throw a pack out of wack
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cool, thx
Brand new builder here.Seem to have run into an issue . Hoping you may have a recommendation. Issues being its no longer working. I purchased a charging port from m-board. Charging Port . And the battery was given to me by another build enthusiast. Its a samsung 36v 10ah of some sort. Since it had the same JST connector, I was advised to cut the ends of both the charging port and battery and connect them by way of soldering. Since the battery worked before, I figured it would work out just fine. Well that wasn’t the case and now doesn’t charge. Now I come to you in hopes that this is a salvageable situation.
Anyone have any advice?
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I don’t know much but If it were me I’d start by checking the polarity…from the charger all the way to the battery. I’d also check my solder job and battery/charger voltage.
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Would personally much prefer to see a fishpaper bridge. I also try to avoid routing near larger soldered wires because they can be sharp.
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I would personally prefer to see a piece of fishpaper in between there, in addition to the tape.
Also that balance wire solder joint at the bottom looks very sketchy.
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ah ok thanks. I already had FG tape there to hold the wires down so I figured it would be usable. Should I replace it or is it just something to keep in mind for the future?
also the solder joints did look janky to me too, but a hard pull didn’t move it so I decided to keep them.
You can leave the tape, but I’d definitely add a strip of FP under the wire.
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Perfect 
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I thought this was an interesting read on spot welding technique and testing from a non hobby/PEV source:
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I’d personally reflow these joints so they’re a bit more cohesive. I’m not sure if it matters though.
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I chose not to as they didn’t budge after a hard pull and I don’t wanna keep heating up the cells
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looking for a 12s smart bms. dont wanna make a thread for it but if you have one (preferably LLT) ill take it.
All the ones I have are reserved for a personal build, sorry
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I got some
im mad that batteryhookup is out of tesla model 3 cells and I’m even more pissed at myself for procrastinating purchasing them
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