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Yeah i dont have any diagnostics tools or instructions. Darfon probably has diagnostics software and manuals, but i doubt theyre very interested in sharing

There is a diagnostic screen on the battery, but it doesnt show any errors, just the charge level and then "battery is going to shut down".

I've got a faulty Darfon E4C0C battery(Atleast it looks to be the problem), the battery shuts itself down after about 15s of being turned on. I'm able to charge and discharge the battery, but always for 15s before it shuts down. Checked all the cell groups for faulty cells, but they were all...