Euro connector (Small2) has a large contact area and it offers the best power and durability in long-term use.
24K gold plate for low resistance.
male has useful guide hole for soldering.
Female 3.5mm with heat sink, Hexagon design is easy to solder on the battery terminal.
Three type of package available, male x 2 set, Female x 10 set, male x2 + Female x 10 set.