Tekonsha 2028 Shur-Set III Breakaway System with Battery, Breakaway Switch and Charger Complete breakaway system for use on 1, 2, 3 and 4 axle trailers 2018 polymer battery case with flat surface mounting 2023 rechargeable sealed 12v 5 amp-hour lead acid battery and terminals 2010-P breakaway switch 2024-07 dc to dc heavy duty quick/maintenance (multi stage) battery charger