Crimping Tool

I notice a number of people extolling the virtues of soldering joints. I can tell you that there are in fact down sides to soldering connections. The most common ones is brittleness. As others have pointed out, they seen failures in soldered connections.

As for the issue of corrosion. In a properly designed connection corrosion should not be an issue. Either, you are using the wrong connector, or your using the wrong connector for the situation. For example, GM's Weather Pac connectors are installed without solder and because of there weather tight design last 200,000 plus miles of service.

So for me when I design a remote battery I typically use a 2 awg. Pure copper cable. I actually prefer to use welding cable, as the strands are as much finer than regular wire and thus easier to bend. Two gauge will easily carry the current. I crimp the lugs on each end and the place a length of shrink tubing to cover the joint.

Total number of failures even in an salt water boating situation, zero.