BATTERY PACK AND CHARGING BANK

Provided is a battery pack. The battery pack is detachably connected to an electric tool or a charger. The battery pack includes a housing, a cell group, a first voltage monitoring module, a control module, a second voltage monitoring module and a protection module. The cell group includes a plurality of cells electrically connected to each other, and the cell group is disposed in the housing. The first voltage monitoring module is configured to monitor at least one of the voltage of each cell or the total voltage of the cell group. The control module is electrically connected to the first voltage monitoring module and configured to control a charging process of the cell group. The second voltage monitoring module is configured to monitor the voltage of each cell to detect whether the cells are in an overvoltage state. The protection module is electrically connected to the second voltage monitoring module and configured to, when the second voltage monitoring module monitors that any one of the cells is in the overvoltage state, cut off a charging path formed between the battery pack and the charger. Further provided is a charging assembly including the battery pack. The battery pack is under dual protection that helps improve the safety during charging.