| 摘要 |
A rechargeable device is provided having a motor and a small-capacity battery coupled to the motor. The small-capacity battery has a storage capacity sufficient for an average use of the device up to a few average uses of the device. A charger may also be provided for charging a rechargeable device. The charger may have charging circuitry and an indicator indicating a recharge state of the rechargeable device. The charger may have a large-capacity battery with a storage capacity greater than a small-capacity battery of the rechargeable device. The large-capacity battery provides sufficient electrical power to recharge the small-capacity battery. The charger may also have a power cord for receiving power from an alternating current power source. Methods for using a rechargeable device and for charging a rechargeable device are also provided.
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