Purpose of knowledge article

• Factors that can contribute to laptop battery swelling
• Action to take if the laptop battery starts swelling
• Preventative steps to reduce the possibility of battery swelling

Resolution

Factors that contribute to laptop battery swelling

• The laptop runs hot due to airflow path obstructions; using it on your lap, pillow, or other surfaces that do not allow heat to dissipate
• Overcharging; continuing charging when the battery is charged
• Using the incorrect charger for the laptop
• Storing a laptop in an area that is extremely hot or cold
• The laptop is old

Action to take if the laptop battery starts swelling

• If you see any sign of battery swelling, you should:
  • Power off the laptop
  • Unplug the charger from the laptop
  • Either contact your department IT admin, or LBNL IT (help@lbl.gov) and provide:
    • State the issue
    • Computer DOE number
    • If you would like a loaner, a repurposed system, or a new system - we can assist
    • Project-activity ID number

Preventative steps to reduce the possibility of battery swelling

• Disconnect the charger from the laptop once fully charged to prevent overcharging
• Use the correct charger for the laptop
• Use the laptop on a surface that allows good airflow for heat dissipation
• Store it in a dry/cool place when not using it
• Use an external laptop fan