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The three most common reasons why an electric toothbrush cannot be charged are:
1, the use of non-original charger can not charge
2, battery aging, life is up
3, interference affects wireless charging
4, a long time without charging and discharging resulting in battery memory effect
Test environment: First, make sure that the electrical outlet you want to use is working properly. Plug in a hair dryer or any other appliance to see if the electrical outlet is working.