Check the listing for details. San Hima Break Away System w/ Battery & Switch Trailer Caravan Towable RV. Condition: New. Listed at 49.99 USD. SAN HIMA break away system ensures legal compliance for a caravan or trailer weighing over 4,409lbs. Featuring a 12V 5Ah battery with built-in charger, you can conveniently charge our break away system from your tow vehicle or trailer's house battery, ensuring you're always prepared for your next adventure. Our trailer break away system is specifically designed for use on 1 or 2 axle caravans and trailers. To help you stay informed, our break away system for trailers features a user-friendly push-to-test button, enabling you to easily check the battery's charge level. This feature ensures that your battery remains fully charged, allowing you to stay prepared at all times. Crafted with a sturdy PP case, our break away system effectively shields the battery from moisture, debris, and other.