This PCB is a sled designed for builds that use 2 18650 batteries wired in series and is fitted for a Hammond 1590g/ 1591a enclosures or larger. These boards are made 2 oz. cooper and are 1.6 thick, making them far more sturdy that any 3D printed sled made from ABS or PLA plastic materials. A surface mounted PFET is required on the sled to complete electrical connections and to provide reverse polarity protection. Included with these boards are 4 tin/nickel coated stainless steel battery clips. These clips custom made to securely hold batteries in place without damage to the outer wrapping.