As it was when it was founded, the Concorde Battery Corporation is still a US family owned and operated premium battery manuf ... acturer. More than three decades ago a pair of mechanically inclined, hands on hard working families began producing lead-acid batteries from the ground up. These premium batteries were first marketed to the aviation industry. Over the years, and with numerous technological advances in hardware and chemistries, Concorde locked in the position as manufacturer of one of the highest quality batteries in the industry. It wasn't long before Concorde began marketing multiple brand named batteries into an array of industries around the world. As Absorbed Glass Mat (AGM) battery technology quickly took the lead in production in the 80's, it wasn't long before it fully replaced production of the flooded lead acid and gel technology batteries. Concorde quickly carved out a niche in many industries and is still today revered as one of the worlds' top quality AGM battery manufacturers. There are a number of materials and processes that contribute to the overwhelming success of the Concorde AGM batteries. The proprietary lead-oxide paste that Concorde engineers have developed is one of the biggest contributors to quality. Unlike any other AGM battery manufacturer, Concorde goes the extra distance to fully seal the edges of the poly ethylene separators to prevent the most common failure in other AGM batteries. Concorde makes all inter-cell connection welds extra robust and over the top of the partitions so all welds can easily be inspected for quality unlike mass-produced batteries. These are just a few examples of what helps make Concord e Batteries the highest quality AGM technology available. Aside from its aviation, solar and mobility AGM battery lines, Concorde has developed an industry leading AGM battery that is marketed throughout the Marine and Recreational Vehicle (RV) industries. read more