Use compatible charging equipment
The device maker's specifications matter more than appearance of the connector.
Stop using damaged products
Swelling, impact damage, overheating or other abnormal behavior needs manufacturer or professional guidance.
Keep recalls in view
Battery-powered consumer products appear regularly in recall systems.
Do not disassemble battery packs
Internal battery work can create electrical, chemical and fire hazards.
General prevention information only. In an active emergency, follow local emergency services and official instructions. Do not attempt electrical, structural, fire-suppression, hazardous-chemical or other safety-critical work without appropriate professional competence.