Abstract: A battery pack includes a housing; a battery cell, a framework and a circuit board that are connected sequentially in a radial direction of the battery cell; a first electrical connector and a second electrical connector that are respectively arranged at positive and negative electrodes in an axial direction of the battery cell and separately connected to the circuit board; and third electrical connectors that are connected to the circuit board and configured to be electrically connected to an electrical device to supply power from the battery cell to the electrical device through the third electrical connectors, where the battery cell, the framework and the circuit board that are integrally connected, the first electrical connector, the second electrical connector, and the third electrical connectors are in a limiting slide fit with the inner cavity of the housing.

Abstract: A multipurpose battery pack includes: a housing, and a battery cell and a circuit board that are disposed in the housing; a first electrical connector connecting one of positive and negative electrodes of the battery cell to the circuit board; a second electrical connector connecting the other one of the positive and negative electrodes of the battery cell to the circuit board; a third electrical connector disposed on the circuit board and including at least one interface, where the interface is adapted to be electrically connected to an external electrical device, to supply power from the battery cell to the electrical device through the third electrical connector; a first connection member adapted to be in a latching connection with a first electrical device; and a second connection member adapted to be in a latching connection with a second electrical device.

Abstract: A mobile power supply device includes a housing; a cell and a circuit board that are arranged in the housing; and a data line. One end of the data line is electrically connected to the circuit board and is fixedly connected to the housing. The housing has at least one flat surface. The data line is suitable for being flexibly bent and is at least partially embedded in the flat surface in a U-shape or an S-shape. The mobile power supply device with the structural design is convenient to use and carry.

Abstract: A battery pack includes a housing, and a battery cell or battery cell assembly and a circuit board that are disposed in the housing, and further includes: a first electrical connector connecting one of the positive and negative electrodes of the battery cell or battery cell assembly to the circuit board; a second electrical connector connecting the other one of the positive and negative electrodes of the battery cell or battery cell assembly to the circuit board; and a third electrical connector disposed on the circuit board and adapted to be electrically connected to an external electrical device to supply power from the battery cell to the electrical device through the third electrical connector. The third electrical connector includes a socket terminal in press fit with a pin terminal of the external electrical device. The technical solution involves supplying power from the battery cell to the electrical device.

Abstract: A multi-purpose mobile power supply includes a first discharge interface configured for powering a computer, communication and consumer electronic product; a second discharge interface configured for powering an electric tool; and an assembly of the mobile power supply and the electric tool. The electric tool includes: an motor; a mounting portion configured for a freely assembling and disassembling connection with the multi-purpose mobile power supply; a power supply terminal provided on the mounting portion and electrically connected to the motor, where the power supply terminal is configured for being combined with the second discharge interface; a latch arranged on the mounting portion, where the multi-purpose mobile power supply is provided with a latch groove corresponding to the latch, and the latch is fitted in the latch groove in a latching connection.