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Question:
Vacuum cleaner Battery or adaptor failure
Answer:
step1：Replace the battery pack to check if it is damaged and if it is charged
step2：If the battery pack is empty and can be powered on after charging, it can judge that it is caused by the bad adapter that can't be charged, and take measures to replace the adapter.
Step 3: If the machine can turn on after replacing the battery pack, and the original battery pack can not be turned on after charging, judge the battery pack bad, take measures to replace the battery pack
