Headquartered in the heartland of the United States - St. Louis, Missouri, Associated Equipment Corporation is known for prov ... iding the highest quality, professional grade battery chargers and testers on the market from our first chargers to our current product offering. Associated Equipment Corp. continues to expand its product-offerings with innovative patented features and cutting-edge technologies for all types of customers: from the automotive service professional, to aircraft and marine mechanics, to recreational users wanting to make sure they have the best equipment the market has to offer. read more