Case 2464 ยท Public preview
A Residue Near a Battery Is Not Necessarily Leaked Electrolyte
A product made a loud noise at power-up and had a ruptured elastomer seal, internal pressure evidence, and rusty-looking residue near a rechargeable battery.
Optical microscopyBackscattered-electron SEMEDSReference-electrolyte comparisonMulti-surface residue survey
What the evidence preview establishes
The visible residues were not liquid battery electrolyte. Reference electrolyte had a strong sodium signature, while residues on the lamination stack, battery contact, shaft, and circuit assembly lacked that signature and were consistent with soldering-flux spatter.
Why this case matters
Location and color are insufficient for residue identification. Analyze a known reference material, define a diagnostic chemical marker, and use its presence or absence to separate a suspected leak from unrelated process residue.
Full evidence reserved for MEMBER and STOREThe complete case includes the evidence sequence, four interpreted figures, alternative explanations, limitations, and practical application guidance.