Modular smartband can include a plurality of coupled modules. The plurality of modules can include at least one core module having at least one processor and at least one peripheral module. Each of the plurality of modules has a coupler end and a receiving end disposed on opposing ends of the module, the coupler end configured to be received in the receiving end of an adjacent module. At least one of the plurality of modules can include a display and at least one the plurality of modules includes a battery.

An electronic watch having a timekeeper logic unit set to control a display of the time. A controller is in communication with an external device or with internet through a wireless interface of the watch. A mechanical energy harvester system is set to transform mechanical energy deriving from the movements of a wearer to electrical energy. A power manager circuit stores the electrical energy in a battery and/or in a capacitor, and to supply the logic unit, the controller and the wireless interface with energy stored in the battery and/or in the capacitor.

An electronic watch having a timekeeper logic unit set to control a display of the time. A controller is in communication with an external device or with internet through a wireless interface of the watch. A mechanical energy harvester system is set to transform mechanical energy deriving from the movements of a wearer to electrical energy. A power manager circuit stores the electrical energy in a battery and/or in a capacitor, and to supply the logic unit, the controller and the wireless interface with energy stored in the battery and/or in the capacitor.

A computer-implemented method for improved determination of state of health (SoH) of a battery of a device can include determining that the device is in a charging state such that a charge of the battery is increased over a charge procedure; determining that a state of charge (SoC) metric of the battery reported by a battery gauge system has increased by a fixed SoC interval; determining a charge time interval over which the SoC metric of the battery has increased by the fixed SoC interval; and determining a SoH metric indicative of the SoH of the battery based at least in part on the charge time interval; wherein determining the SoH metric is based at least in part on a known relationship between a reference time interval representative of time required to increase a reference battery at full SoH by the fixed SoC interval and the charge time interval.

A portable electronic apparatus includes a case, a solar cell disposed in the case, a GPS antenna as an antenna section disposed in the case, including a base as a nonconductive member and a conductive body disposed on a surface of the nonconductive member, and adapted to receive a positioning satellite signal, and a circuit board disposed in the case, and electrically connected to the solar cell and the antenna section, and the antenna section overlaps the solar cell in a planar view viewed from a normal direction of light receiving surfaces of the solar cell.

A portable electronic apparatus includes a case, a solar cell disposed in the case, a GPS antenna as an antenna section disposed in the case, including a base as a nonconductive member and a conductive body disposed on a surface of the nonconductive member, and adapted to receive a positioning satellite signal, and a circuit board disposed in the case, and electrically connected to the solar cell and the antenna section, and the antenna section overlaps the solar cell in a planar view viewed from a normal direction of light receiving surfaces of the solar cell.

A battery holding device includes a battery holding member and a plate. The plate houses the battery holding member. The battery holding member includes a fastener and a battery holder. The fastener is fixed to the plate. The battery holder holds a battery, and is arranged at a position where the battery holder does not contact the plate.

A watch charging assembly 10 has a coil 22, a membrane 24 and a back plate 12. The coil 22 is configured to pass electric current received at a first or second contact pad 27, 28. The membrane 24 is affixed to the coil 22 forming a membrane and coil assembly 20. The back plate 12 has a pair of conductive inserts 30. Each conductive insert 30 is aligned with and contacts each contact pad 27, 28. The back plate 12 with the coil 22 and membrane 24 form the charging assembly 10. The charging assembly 10 is configured to form a bottom or underside or, alternatively, be attached to a bottom or underside of a rechargeable battery operated wristwatch 100 and when worn, the charging assembly 10 receives electric current from the wearer to charge a rechargeable battery of the wristwatch 100. The coil 22 can be a pancake coil.

A watch charging assembly 10 has a coil 22, a membrane 24 and a back plate 12. The coil 22 is configured to pass electric current received at a first or second contact pad 27, 28. The membrane 24 is affixed to the coil 22 forming a membrane and coil assembly 20. The back plate 12 has a pair of conductive inserts 30. Each conductive insert 30 is aligned with and contacts each contact pad 27, 28. The back plate 12 with the coil 22 and membrane 24 form the charging assembly 10. The charging assembly 10 is configured to form a bottom or underside or, alternatively, be attached to a bottom or underside of a rechargeable battery operated wristwatch 100 and when worn, the charging assembly 10 receives electric current from the wearer to charge a rechargeable battery of the wristwatch 100. The coil 22 can be a pancake coil.

There is provided a wearable device, comprising connectors comprising a first connector and a second connector for interfacing with another device and/or a charger; a first switch for connecting the first connector and the second connector to a battery charging circuit of the wearable device; a second switch for connecting the first connector and the second connector to a communication circuit of the wearable device; a control unit configured to: enable an electrical connection between the connectors and the battery charging circuit, when the first switch is closed and the second switch is open; and enable communication with another device for data transfer via the connectors, when the first switch is open and the second switch is closed.