I just rebuilt a battery, and under no load the BMS is putting out serious heat. I’ve never experienced this, any ideas where this is coming from?
Showing 26 Celsius in room temperature.
Lion battery, LG HG2 cells, bluetooth bms, 20s 10p
I'm banging my head against the wall on this, pretty bummed out as I just spent a grand on cells for this battery, so looking for some extra ES brain power.
Context:
- I built a 20S10P li-on battery (LGH2 cells), everything was working fine for a couple months, then the battery shut-off and...
I’ve got a 273 laced on a 19” moto but it was laced for me. With my caliper the best I can guess is somewhere between 67-80mm when laced radial pattern.
Good info here: https://www.ebikes.ca/learn/connectors.html
From my experience I agree with that post, if all he connections were set for each other, Higo are pretty nice (some of my sabvaton connections for my LCD use them), but they can be a pretty big PITA to troubleshoot compared to...
I’d look at it like comparing a 4 cylinder engine to a 6 cylinder, even though this is an arbitrary comparison. You’d always be fine with a 4 cylinder, but a 6 is just much nicer. Go with the 48/52
Can anyone tell me what material this is? Ive seen it in a couple triangle batteries I’ve bought and I’d like to use it for my next build, but I can’t seem to track it down online. I’m assuming it’s some kind of plastic? fiberglass? And I’m assuming it’s specialty purposed, it’s yellow in...
Anyone have any updates on this that they could share? I’m starting to look into doing the same but unfortunately not a ton of existing examples of how people went through with this. Thanks.
Clearly my google skills stink, just came across this https://m.aliexpress.com/item/32826820690.html?trace=wwwdetail2mobilesitedetail&productId=32826820690&productSubject=Smart-Display-300A-200A-150A-100A-70A-Lithium-Battery-Protection-Board-Balance-BMS-Coulomb-Meter-Lithium
Will keep...
Yea thanks ideally that’s what I want, but I had trouble finding one that is rated at at least 200 amps. I’m planning on using LG HG2 cells. If anyone knows of one that can handle that I’d love to hear.
I’m about to embark on a new battery build, 20s 10p. In the past I’ve has some issues with cell groups becoming unbalanced. I was thinking of connecting very small voltmeters to each cell group and attaching to the outside of my battery pack. The only issue I’m realizing is that I need a switch...
amberwolf this is making much more sense to me now, thank you. I have always been connecting every cell in a parallel group with its own series tab to the next groups, so now realizing the parallel connection I'm planning is just needed for the balance.
Thanks for all the replies. Sorry if my question wasn't clear.
I understand I want lower resistance, my question specifically relates to that very thin parallel strip in the picture in my OP, and if that's creating low enough resistance for the power I'm trying to achieve.
For example, in my...