Releasable, repeatable electrical connection employing compression

An electrical connection releasably, repeatably electrically couples with respect to a matching connection of a portable cartridge. A substrate in the portable cartridge has electrical contacts on a facing surface of a flex cable mounted on a backing plate. A matching circuitized flexible substrate has electrical contacts on a facing surface thereof, which are arranged to match the portable cartridge electrical contacts when in a face-to-face relationship, and is mounted on a compression element with protruding compression members. Elongated electrical contacts are registered with two adjacent individual compression members. A loader exerts a normal force to the cartridge to compress the compression element and create non-wiping contact between the facing electrical contacts.