As far as connection...you really just have to make sure it makes good contact
I once read somewhere that when you buy a new set of jumper cables, take some pliers and make sure the clips are tightly crimped to the cables. Probably even more important to do with very cheap cables.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.