| 主权项 |
1. A compact battery charger comprising:
a storage capacitor and an internal lithium ion battery to supply a starting current to jump start an engine electrically coupled with an external battery, wherein the internal lithium ion battery is electrically coupled in parallel with said storage capacitor; a processor operatively coupled with (1) a reverse polarity sensor to detect a polarity of the external battery, (2) a temperature sensor to detect a temperature of said storage capacitor or said internal lithium ion battery, and (3) a voltage sensor to detect a voltage of said internal lithium ion battery; a display device operatively coupled to the processor, the display device to display a state of charge of said internal lithium ion battery, said storage capacitor, or a combination thereof; a direct current (DC) output port to output the starting current, wherein the DC output port is configured to electrically couple with the external battery via a set of conductors; and a power management circuit operatively coupled to the processor, the internal lithium ion battery, and the storage capacitor, the power management circuit to selectively provide the starting current to said DC output port. |
