Trojan Battery Company
Trojan Battery Company is a manufacturer of deep-cycle batteries, offering a complete portfolio of technologically advanced deep-cycle flooded, AGM, and gel batteries that provide maximum long-lasting performance to meet the requirements of today's advancing renewable energy systems. Trojan Battery Company is ISO 9001:2008 certified with US-based operations on both coasts.
http://www.trojanbattery.com/markets/renewable-energy-re/
As seen in: 2013 Solar Buyers Guide