Batteries and your engine starter need large terminals properly crimped on to large cables using special tools.
Wire cables of size 6 AWG and 4 AWG are commonly used in our experimental aircraft's battery and starter circuits. These large cables need their appropriately sized ring terminals crimped on properly for a reliable connection to the battery, starter, or contactor devices.
We cannot use the same crimping pliers that are used on the smaller size wire in the aircraft. A number of specialized tools exist that can easily crimp these larger terminals. Creating your own custom cables for your aircraft is an easy and rewarding experience. Watch as we demonstrate using one of these tools: