Patent ID: 7136682

Claim:
A portable electronic system comprising: a spare battery device, the spare battery device at least comprising: a first fixer unit; a plurality of output contact pads for outputting power from the spare battery device; and a resilient object protruding out from the spare battery device, wherein the resilient object is an electric conductor; and a portable device coupled to the spare battery device, the portable device at least comprising: a second fixer unit, coupled to the first fixer unit, for fastening the spare battery device to the portable device; a plurality of input contact pads for receiving power from the spare battery device, wherein the location of each of the output contact pads of the spare battery device is associated with the location of each of the input contact pads of the portable device; and a conductive covering with a protrusion, wherein the location of the protrusion in the portable device is associated with the location of the resilient object in the spare battery device; wherein, by adjusting the coupling relationship between the first fixer unit and the second fixer unit, the resilient object can be connected to the protrusion of the portable device, and each of the input contact pads of the portable device can be coupled to the corresponding output contact pad of the spare battery device, so that the power stored in the spare battery device can be outputted to the portable device; and wherein the first fixer unit is a screw, and the second fixer unit is a nut.