| 摘要 |
A portable power supply for charging or operating portable electronic devices comprises an energy converter such as a solar panel 8 to convert energy from a non-electrical energy source into electrical energy; an energy store such as rechargeable batteries 22 to store the electrical energy and a power outlet 12 to provide power to a portable electronic device. The re-chargeable batteries may be a standard size, removable from the charging unit for use in the portable device and in a user-accessible battery compartment. Converted electrical energy can be diverted between the store and the outlet depending on the current drawn and the available current from the power converter. A power inlet 10 can be connected to charge the energy store. The voltage available at the outlet can be selected by a user or the power outlet can be a USB socket providing a fixed voltage. |
