Exotronic 1/2" BSP 10mm OD 304 Stainless Steel Battery Vent The Exotronic 1/2" BSP 10mm OD 304 Stainless Steel Vent is designed for use with lithium battery systems, caravan battery compartments, RV electrical installations, marine systems, and off-grid battery enclosures where controlled ventilation and pressure equalisation are required. This stainless steel vent provides a durable external vent point for battery...