If using 120W fast charge gradually slow charging speed, there may be the following reasons and solutions:
1. Charger or charging cable quality is not good: Replace the high quality charger and charging cable to ensure that it can provide sufficient current and stable charging speed.
2. The charging environment temperature is too high: The high temperature environment will affect the charging efficiency of the battery. It is recommended to charge the device in a cool place and avoid charging in the sun for a long time.
3. Device software issues: Make sure the device is running the latest version of the operating system and applications, as some software issues may cause slow charging. You can try restarting the device or clearing the cache.
4. Battery aging: With the increase of use time, the battery capacity will gradually decrease. If the above methods are not effective, then the battery may have aged and need to be replaced with a new battery.
If the above solutions are not effective, it is recommended to contact the after-sales service center of the equipment for more professional help and maintenance.
If the 120W fast charge becomes less and less, it may be due to a problem with the charger or charging cable.
First, check the charger and charging cable for damage or looseness. If so, replace it with a new charger or charging cable.
Secondly, make sure that the charger and charging cable used are compatible with the device. If the problem still exists, it may be the problem of the equipment itself, it is recommended to contact after-sales service or professional maintenance personnel for overhaul and repair.