A magnetic charging device for charging the battery batteries of an electric motorized cart has a plug unit a a charger unit. When the battery or batteries are charging, the plug unit and charger unit are releasably engaged with each other by a magnetic connection. A microprocessor controller provides a safety feature that ensures the plug unit is fully engaged with the charger unit before electricity is allowed to flow from the power source to the batteries.

A magnetic charging device for charging the battery batteries of an electric motorized cart has a plug unit a a charger unit. When the battery or batteries are charging, the plug unit and charger unit are releasably engaged with each other by a magnetic connection. A microprocessor controller provides a safety feature that ensures the plug unit is fully engaged with the charger unit before electricity is allowed to flow from the power source to the batteries.

A method of enhancing performance of an electrochemical cell having a first electrode and a second electrode and electrolyte between the first and second electrodes. The first and second electrodes define a current flow path and the method comprises providing a changing magnetic field through the cell.

A method of enhancing performance of an electrochemical cell having a first electrode and a second electrode and electrolyte between the first and second electrodes. The first and second electrodes define a current flow path and the method comprises providing a changing magnetic field through the cell.

A power saving type vehicle socket apparatus includes a housing, a circuit board, a power conversion circuit, a power socket, a magnetic switch, a shroud and a magnetic object. The housing includes a tube opening. The shroud includes a cap. When the cap caps the tube opening of the housing, the magnetic switch senses the magnetic object to generate a first signal to send the first signal to the power conversion circuit, so that the power conversion circuit stop supplying power to the power socket. When the cap does not cap the tube opening of the housing, the magnetic switch does not sense the magnetic object, so that the magnetic switch generates a second signal to send the second signal to the power conversion circuit, so that the power conversion circuit supplies power to the power socket.

An uninterruptible power supply device (U1) includes a converter (40), an inverter (41), a bidirectional chopper (24), and a controller (53). The bidirectional chopper (24) includes first to fourth transistors (Q11-Q14), first to fourth diodes (D11-D14), and first and second, coils (51, 52). In a charging mode, the controller (53) causes the first and fourth transistors (Q11, Q14) to be complementarily turned on and controls the ON period of each of the first and fourth transistors (Q11, Q14) so as to cause respective detected values of first current and second current (11, 12) flowing through the first coil and the second coil (51, 52) to be equal to each other.

A method of enhancing performance of an electrochemical cell having a first electrode and a second electrode and electrolyte between the first and second electrodes. The first and second electrodes define a current flow path and the method comprises providing a changing magnetic field through the cell.

A method of enhancing performance of an electrochemical cell having a first electrode and a second electrode and electrolyte between the first and second electrodes. The first and second electrodes define a current flow path and the method comprises providing a changing magnetic field through the cell.