A charger, comprising: a charger body, an upper part of one side of which is provided with a placement slot, which is hinged to a charging port and a plug-in rod, the upper part of the body is provided with a power indicator light, the bottom end is provided with a socket for adapting the charging cable, and the other side is provided with a lithium battery placement slot, in which a lithium battery placement case is inserted. Corrugated side support sheets are fixedly connected to both sides in the case, the top end of which is connected to a first conductive sheet, the inner bottom end of which is fixedly connected to a second conductive sheet hinged to the third conductive sheet and a spring is fixedly connected therebetween. The charger has a simple structure, the plug-in rod is hinged. It has a built-in battery as a power bank.

A device for charging and discharging a battery cell, and a method of charging and discharging a battery cell are provided. The device includes a pair of jigs configured to fix respective electrode leads of the battery cell. Each jig includes a first jig block configured to press a first surface of a corresponding electrode lead of the battery cell, a second jig block configured to press a second surface of the corresponding electrode lead facing the first surface of the corresponding electrode lead, a first jig block control unit connected to the first jig block to move the first jig block toward the first surface of the corresponding electrode lead, and an interval adjusting member arranged between the first and second jig blocks to control an interval between the first and second jig blocks.

A mobile electric vehicle charging system may include a fuel cell configured to generate electric power required to drive a vehicle, a main battery configured to store electric power generated by the fuel cell, a bidirectional power converter configured to control electric power input to and output from the main battery, a mobile charger configured to supply electric power to charge another vehicle, and a high-voltage junction box for divergence, configured to distribute electric power generated by the fuel cell to the bidirectional power converter and the mobile charger.

A charging cabinet includes a power conversion circuit, an input interface, and a plurality of output interfaces. An input end of the power conversion circuit is connected to the input interface. The power conversion circuit converts an alternating current supplied by an alternating current power grid into a direct current, and then charges a plurality of battery packs by using the direct current.

With respect to an accommodation container that accommodates a substrate-shaped sensor, the accommodation container includes a container body that has an opening, a support that is disposed inside the container body and configured to support the substrate-shaped sensor, a contact pin that is disposed inside the container body and configured to come into contact with a terminal portion of the substrate-shaped sensor, a driving mechanism that is disposed inside the container body and configured to drive the contact pin, a rotation shaft member that drives the driving mechanism from an outside of the container body, a jack that is disposed outside the container body and electrically connected to the contact pin, and a lid that is configured to close the opening of the container body.

An airport ground power unit for supplying electric current to an aircraft parked on the ground, a method of operating the ground power unit, a system for supplying electric current to an aircraft parked on the ground, a method of operating such system, and a Y-adaptor.

A backup battery system includes a charging-discharging module and a battery module. The charging-discharging module includes a first connector and a first engaging member. The battery module is detachably connected to the charging-discharging module and includes a second connector corresponding to the first connector and a second engaging member corresponding to the first engaging member. When the battery module is connected to the charging-discharging module, the first connector is joined with the second connector and the first engaging member is fixed to the second engaging member.

An electric vehicle charging system includes a power distributing system configured to receive power from a power control system and selectively direct the power to one of a plurality of power dispensers coupled to the power distribution system.

A rechargeable battery jump starting device with a control switch backlight system. The control switch backlight system is configured to assist a user viewing the selectable positions of the control switch for selecting a particular 12V or 24V operating mode of the portable rechargeable battery jump starting device in day light, sunshine, low light, and darkness.

A pad for wirelessly charging wireless products selected from the group consisting of wireless hair clippers, wireless air compressors, wireless hair curling iron, wireless hair styles, wireless hair trimmer, wireless hair dryer, wireless hair massager, wireless hair straightener, wireless hair brush, wireless razor, wireless hot hair brush, wireless nose trimmer, wherein said pad includes permanent charging ports and temporary charging ports, said permanent charging ports having charging coils embedded in the pad, said temporary charging ports inserted with wireless charging modules to provide wireless charging capability. The size, number and orientation of the permanent and temporary charging ports can vary depending on the users's need.