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I suspect that your universal charger is defective, and falsely sensing a battery defect.
Also - have you tried the reassembled cells for 6 hours? cells that have been sitting on the shelf for awhile, become polarized, and might be sensed as defective for a while, before being thoroughly and lengthily charged overcomes the polarization.
The two wired sensors should not be a problem, if they are as they used to be, connected properly, and the replaced cells are a genuine match from an engineering and usability standpoint.