A portable power charger is provided for charging an electronic device from a rechargeable battery internally disposed within the charger. An attachment system is also provided for connecting the electronic device to the portable charger and maintaining the connection during charging, whether by wireless means or by direct charging connection. The attachment system can also ensure that respective wireless transmission components in the portable charger and the electronic device, where available, are properly aligned for optimal and efficient wireless charging. The alignment system can comprise an arrangement of magnets on each of the portable charger and the electronic device, whereby said magnets are geometrically arrangement is spaced apart relationship to one another. The alignment system may alternatively comprise a sticky pads, suction cups or hook-and-loop fasteners to physical attach the electronic device to the portable charger.