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I know you've all been waiting with bated breath for my updates. Found (and fixed) the issue. It might have been obvious to some, but it was a bit insidious. The positive wire inside the battery pack had a poor connection, that had started to blacken, to the output port. There was still...

New rabbit hole. Why don't I simply bypass the battery BMS? It's on the (-) line, (+) goes right out to the port. Jumpering from the (-) port to the (-) battery simply bypasses the BMS. I won't benefit from the balancing the BMS presumably does, but for a 10 second test...

Updates: Tested each of the 10 cell packs inside the battery. 8 test at 4.17V, 2 test at 4.16V. The pack hasn't been charged since Friday night (it's Tuesday), so I don't think any pack is failing. Running the e-bike using the charger instead of the battery pack (up on a bike stand with the...

Great, thanks, will try that today and report back.

The only part I didn't follow was the "voltages at the discharge". Do you mean at the battery output terminals (not the charging port)? If so, yes, exactly and only there. Or did you mean voltages while trying to pull some power from the battery? Testing each cell group is next up. I tested...

Hello, I've happily put on about 5000 miles over 5 years on a yosepower KT-based rear wheel system. I've had one or two breakdowns in that time, but now I am having a time diagnosing/fixing this latest one. (Still very happy with the system) It's a KT controller attached to a bottle-style 36V...