Battery Powered Device
First Claim
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1. A battery powered apparatus comprising:
- a rechargeable energy storage device;
a battery receiving region;
an appliance that receives energy from the rechargeable energy storage device, wherein the appliance includes a first operating mode and a second, relatively lower power operating mode;
a circuit that uses energy from a battery received in the battery receiving region to charge the rechargeable energy storage device;
a state of charge detector that detects a state of charge of the rechargeable energy storage device;
a mode controller that changes the operating mode of the appliance as a function of the detected state of charge.
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Abstract
A battery powered apparatus (100) includes an electrically powered device (124), a rechargeable energy storage device (112), and a battery receiving region (104) that receives at least a first battery (106). The electrically powered device (124) includes at least first and second operating modes. The operating mode of the device (124) is selected as a function of the state of charge of one or both the battery (106) and the rechargeable energy storage device (112).
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Citations
38 Claims
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1. A battery powered apparatus comprising:
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a rechargeable energy storage device; a battery receiving region; an appliance that receives energy from the rechargeable energy storage device, wherein the appliance includes a first operating mode and a second, relatively lower power operating mode; a circuit that uses energy from a battery received in the battery receiving region to charge the rechargeable energy storage device; a state of charge detector that detects a state of charge of the rechargeable energy storage device; a mode controller that changes the operating mode of the appliance as a function of the detected state of charge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15)
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11. The battery powered apparatus of clam 1 further including a user interface that indicates the state of charge of the rechargeable energy storage device and an override function that allows the user to cause the appliance to enter the second operating mode.
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16. A method comprising:
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using energy from a battery received in a battery receiving region of a battery powered apparatus to charge a rechargeable energy storage device of the battery powered apparatus at a first rate; using energy from the rechargeable energy source to operate an electrical appliance of the device in a first operating mode that discharges the rechargeable energy storage device at a second rate, wherein the first rate is lower than second rate; causing, as a function of the state of charge of the rechargeable energy storage device, the appliance to enter a second operating mode that discharges the rechargeable energy storage device at a third rate, wherein the third rate is lower than the second rate. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28)
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24. The method of clam 16 including increasing the first rate based on an input from a human user.
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29. An apparatus comprising:
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a battery receiving region that receives a first battery; a rechargeable energy storage device that receives energy from the first battery; an appliance that receives energy from the rechargeable energy storage device and includes a first operating mode and an extended use operating mode; a mode controller that causes the electrical appliance to enter the extended use mode based on a state of charge at least one of the rechargeable energy storage device and the first battery. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification