VACUUM CLEANER INCLUDING A RECHARGEABLE BATTERY AND CONTROL METHOD THEREOF

A vacuum cleaner includes: memory storing instructions; a power part including a rechargeable battery; a suction motor configured to be driven by power supplied by the power part to suction debris; a debris container configured to store the debris that is suctioned by the suction motor; a charging terminal configured to be connectable to an external charging device that is configured to charge the rechargeable battery; and at least one processor including processing circuitry, where the instructions, when executed individually or collectively by the at least one processor, cause the vacuum cleaner to: perform a charging function in a first mode by supplying a battery current of a threshold strength to the rechargeable battery, obtain, in a state of performing the charging function in the first mode, a first voltage of the charging terminal of the vacuum cleaner.