Abstract: A hinge mechanism, including a base, a first rotating part, a linkage member, and a floating support part. In a case that the hinge mechanism is in a first state, a connecting part of a first linkage member is located on one side of the base, a connecting part of a second linkage member is located on another side of the base, at least one of a plurality of second rotating parts supports the floating support part, and a distance between an outer side wall of the base and the floating support part is a first distance. In a case that the hinge mechanism is in a second state, the connecting parts of the first linkage member and second linkage member are both located on a side of the base facing a screen support side, the second rotating part avoids the floating support part, the distance is a second distance.

Abstract: A marine battery charger system configured to be installed on a marine vessel to charge a marine battery includes a housing, a charging circuit in the housing configured to receive AC power and to output a charge current to the marine battery, and a cord. The cord has a plug end configured to engage an AC power outlet and is configured to transmit the AC power from the AC power outlet to the charging circuit. A controller is configured to control a charging operation mode of the charging circuit and a status indicator is located at the plug end of the cord and configured to be controlled by the controller to indicate the charging operation mode of the charging circuit.