I need to create a high current (~2A) connection between multiple closely stacked PCBs. Signal connections are made using a 0.5mm pitch, 4mm stack height mezzantine connector with a individual pin current rating of only 300mA. Using this connector to carry the 2A and associated ground would consume a lot of pins.
Therefore I am looking for alternative connectors that are both stackable and have higher current rating. I am considering spring contacts (both of pogo-type and simple metal latches) but wonder how well those will function when the PCB is subject to vibrations. Can someone share his/her experience? Note that those contacts should carry power, not signals.