Battery Connectors

[BrianG]

Using the kind with the cutouts is somewhat easier, and also allows for cleaner angled wire/connector setups (where the wire is soldered at an angle to the connector so the wire doesn't have to bend so much for certain setups).

However, using the regular kind is easy too if you do it right. Tin the "hole" about 1/4 to 1/3 full. Tin the wire. Use a vice or something to hold the plug in place. Then put the tinned wire into the hole as far as it will go. Apply the soldering iron. Once the wire and connector get hot enough, the wire will simply "sink" into the hole. Done.