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When I got this right the QNBBM 8S balancer costs about 170 EUR :D... thats a bit much for an balancer isn't it? And you're also using a passive balancer as well? Why both? The idea of using molex ports is really interesting as it would save the double wiring at the cell terminals and so reduce...

Yes, its a 200A 16s Daly BMS with "active balancing" ... but the balancing current is 50mA :D, so not really noticing. Thanks for the idea. I will probably try this, but I have no lab power supply :/ - will try something else. Which "Active BMS" do you mean? When I selected all components of...

Alright, directly ordered this paste - even its quite pricy with ~23 EUR for 80ml :D - so when it arrives I will clean everything and use this one for the connections. Thanks so far! Do you think the missing conductivity could've cause any damage? For the cell as well as for the balancer? I am...

hmmm... I watched a youtube video of a professional and he said, you could use this paste for LiFePo4 projects :( . So to be sure, I will order an other paste. Any suggestions? Dumb question: could you also use the same pastes like when installing a CPU to the socket?

For full documentation - this is a picture of the negative terminal of the mentioned cell 4 (counted from the beginning of the right top pack) after the second stress test without the balancer. This was the indicator of heat generation as it colored dark with a little bit of smoking. But the...

Of course I will change the terminals first ;) Yes, polished every busbar and lug and also I used good conductive grease (which I think can also cause some problem, maybe I used too much?)...

Hi jimbob420, like I wrote, I did check the plugs before connecting and everything was and is correct :/ I noticed another odd thing, while testing the battery pack again without the balancer. Same power consumption as when the capacitors exploded: 4KW. While doing this I checked the values of...

Will provide pictures asap! Thank you all for your interest and willingness to help!

I couldn't find anything like that on google too :D So I wired and installed the balancer exactly the same as the BMS with its own ring terminals but on the same cell terminals. So the wiring cannot be the problem in my opinion. And without any heavy load, the balancer was working as expected.

Hello my friends, quite new to DIY battery packs but I would say, that I am really sure what I am doing from an electrical perspective - until now ;). I finished my first project with building a ~10KWh 16S 48V LiFePo4 battery for my 5KW hybid inverter which is connected to 10 of 310W...