Refueling assemblies for fuel tanks, refillable fuel tanks, and associated methods

A hand-transportable portable refueling assembly (100), comprising:

• a chassis (104) comprising a body (106) defining a plurality of docking ports (108) configured to operatively and respectively receive a plurality of fuel tanks (102);
• wherein the chassis (104) further comprises a handle (105) configured to be held by a user to carry the refueling assembly (100), and a stand (107) configured to maintain the chassis (104) in an upright position;
• at least one fuel conduit (110) supported by and/or defined by the body (106);
• a plurality of docking-port valve assemblies (130) supported by the body (106), in fluid communication with the at least one fuel conduit (110), and configured to be operatively coupled to the plurality of fuel tanks (102) when the plurality of fuel tanks (102) are operatively positioned in the plurality of docking ports (108);
• and
• a fuel-source valve assembly (112) supported by the body (106), in fluid communication with the at least one fuel conduit (110), and configured to be operatively coupled to a fuel source (114) to selectively permit fuel from the fuel source (114) to be operatively delivered to the plurality of fuel tanks (102) when the plurality of fuel tanks (102) are operatively coupled to the plurality of docking-port valve assemblies (130).