RECHARGEABLE BATTERY PACK AND HANDHELD VACUUM CLEANER

A rechargeable battery pack, applicable in a handheld vacuum cleaner, comprising: a polymer battery (), comprising at least one polymer battery unit (); a charger input terminal (), electrically connected to the polymer battery (), the battery pack charging electricity to the polymer battery () via the charger input terminal (); an electrical interface (), electrically connected to the polymer battery () for providing electricity to a handheld vacuum cleaner when the battery pack is connected to the handheld vacuum cleaner; and a PCM board (), comprising a power supply management chip (U) and a peripheral equalization circuit connected between the polymer battery () and the power supply management chip (U). The internal resistance of the polymer battery in the rechargeable battery pack is less than the internal resistance of a cylindrical battery commonly used in products such as handheld vacuum cleaners and power tools, thus reducing the heat generated when discharging with a large current, and providing higher market value.