Warning signs
A lifting screen, separating cover, bulge, chemical smell, hissing, smoke, or heat while idle can indicate a battery problem.
Respond cautiously
Stop charging or pressing on a swollen device. Follow official instructions and contact local emergency services for fire or smoke.
Use qualified service
Do not puncture, crush, bend, or mail a damaged lithium-ion battery through an unapproved channel. Ask about authorized service and disposal.
Primary sources
Important
Device support and safety information can change. Recheck the linked manufacturer and regulator evidence before making a purchase or safety decision.