Portable battery charger
First Claim
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1. An apparatus comprising:
- a handheld mobile communication device that includes a rechargeable first battery for powering the device; and
a charger that includes a second battery and that is configured to be detachably coupled to and supported by the device, for the device and the charger to be carried together as a single unit as the charger charges the first battery with power from the second battery;
wherein the charger is configured to monitor the voltages of both the first and second batteries;
wherein the charger further comprises;
a switching regulator coupled to the second battery for generating a charging output and a controller coupled to the first and second battery for controlling the operation of the switching regulator based on the measured voltage level of both the first and the second batteries.
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Abstract
A handheld mobile communication device includes a rechargeable first battery for powering the device. A charger includes a second battery. The charger is configured to be detachably coupled to and supported by the device. The device and the charger can be carried together as a single unit as the charger charges the first battery with power from the second battery.
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Citations
22 Claims
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1. An apparatus comprising:
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a handheld mobile communication device that includes a rechargeable first battery for powering the device; and a charger that includes a second battery and that is configured to be detachably coupled to and supported by the device, for the device and the charger to be carried together as a single unit as the charger charges the first battery with power from the second battery; wherein the charger is configured to monitor the voltages of both the first and second batteries; wherein the charger further comprises;
a switching regulator coupled to the second battery for generating a charging output and a controller coupled to the first and second battery for controlling the operation of the switching regulator based on the measured voltage level of both the first and the second batteries. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 19, 20, 21, 22)
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12. An apparatus comprising:
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a mobile communication device that includes a rechargeable first battery for powering the device; and a charger including a second battery and a voltage converter that converts the second battery'"'"'s voltage to an output voltage difrrent than the second battery'"'"'s voltage, the charger configured to be detachably coupled to the device to charge the first battery with the output voltage; wherein the charger is configured to monitor the voltages of both the first and second batteries; wherein the charger further comprises;
a switching regulator coupled to the second battery for generating a charging output and a controller coupled to the first and second battery for controlling the operation of the switching regulator based on the measured voltage level of both the first and the second battery. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification