Stop if the battery is swollen, the case is separating, the connector is melting, the device smells chemical, or heat becomes dangerous.
Check the outlet and charger
Start with a reliable wall outlet, compatible adapter, and cable. Avoid diagnosing the device until you know the external power path works.
Inspect the charging connection
Look for visible lint or debris around the external port without inserting metal tools or liquids. If the connector feels loose or the cable only works at an angle, stop forcing it.
Check temperature and moisture
Charging can pause when a device is too hot, too cold, or detects moisture. Let the device return to a safe, dry, room-temperature condition before retesting.
Compare charging behavior
Note whether the battery percentage rises, a charging symbol appears, the device warms slightly, or a computer detects it. These details can narrow the problem.
Know when hardware service makes sense
If multiple known-good chargers fail, the port is damaged, the battery swells, or charging remains unstable, qualified inspection is appropriate.