I want to power a 7-port USB3-hub7bc in the field from a 12VDC battery supply for my telescope and other astrophotography equipment. Can I simply connect a car adapter to the 12V input (fused but straight wired) or do I need a switching power supply (considering http://www.powerstream.com/dc6.htm) to provide a steadier 12V? I am aware that a 12V battery will provide ~13.0-VDC down to about 11.5 VDC as it discharges and I want to make sure the circuitry in the hub won’t be affected by the power drop as the battery discharges.
Aaron