A power acquisition unit for electrically coupling to an electronic device and that is electrically and mechanically coupled to an external power source when the unit is being used to transmit power from the external power source to the electronic device, the power acquisition unit comprising a cigarette lighter adapter having a housing with a distal end, a proximal end, and a length running from the distal end to the proximal end, the distal end being adapted for insertion into and positioning within a cigarette lighter, the cigarette lighter having a depth and an inner circumference, the cigarette lighter adapter further comprising a deformable resilient member having an outer circumference, the deformable resilient member being mounted on the cigarette lighter adapter near the distal end so that its outer circumference is generally perpendicular to the length of the housing, the outer circumference of the deformable resilient member being larger than the inner circumference of the cigarette lighter so that pushing the distal end of the cigarette lighter adapter into the cigarette lighter causes the outer circumference of the deformable resilient member to bend away from the distal end of the cigarette lighter adapter and towards the proximal end of the cigarette lighter adapter while at least some of the deformable resilient member even after such deformation continues to push against the inner circumference of the cigarette lighter.