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  1. H

    kWeld - "Next level" DIY battery spot welder

    Hey ElectricGod, Just one additional reminder or warning. These Maxwell Supercaps contain as you know some nasty chemicals. What you might not know is, if you overheat the Cap to arount 150°C there is cyanid created in the Supercap. I don't think that you want to have cyanid in your house so I...
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    10s3p 30Q Pack Cell or BMS gone bad?

    Yeah I'm quite happy that I don't need to replace any Cells :) Discharge after the Balance from two Days ago. I don't think that there was done any harm to any Cell. Just remember Cell4 started a few mV below the others due to not perfect Calibration of my Junsi. So I'm very Happy that...
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    10s3p 30Q Pack Cell or BMS gone bad?

    So well. unexpected change of things... As I said initially it seemed to me that the drift was way slower afterI disconnected the BMS once to check for Voltages as opposed to when I first found of the disbalance. What I think I found out now is that all this voltage driftig was due to the first...
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    10s3p 30Q Pack Cell or BMS gone bad?

    Yes I know that it matters how I charge/discharge. But I already stated in the first post So no difference with which Controller I take the 15A. Charging current differs on how mich Time I have. between 1A and 4,5A if It has to be fast, mostly I charge the pack at 2A. That is max Charge of...
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    10s3p 30Q Pack Cell or BMS gone bad?

    This Controller:https://www.ebike-solutions.com/de/shop/pedelec-e-bike-teile/motoren/bafang-cst-hinterradmotor-36v-250w.html And Motor:https://www.ebike-solutions.com/de/shop/pedelec-e-bike-teile/controller/ebs-v2-controller-foc-36v-15a.html But I don't know why that matters. Like I said...
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    10s3p 30Q Pack Cell or BMS gone bad?

    Which my Pack definitely is/was as I stated in my initial post I have discharged every Cell beforehand with a Junsi 308 duo get their Capacity. additional I noted Max discharge temp and Internal Resistance. Then I did an Excel sheet to match the group to at the end witin 5mAh per Group. the...
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    10s3p 30Q Pack Cell or BMS gone bad?

    Hey Forum :), Long time Reader not writer here... I've got a problem here an need you to help me identifying it. I've build an E-Bike battery last December. 10s3p Samsung 30Q Cells inside with a Bluetooth BMS Max Current is 15A but most of the time they have a nice life in my Pack with giving...
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