http://www.wholesalesolar.com/deep-cycle-battery-info.html
Future Trends
Companies world-wide are quickly adjusting to the increased global market for solar systems by developing batteries that are better suited for photovoltaic systems. At some distant point in the future, it is likely that lead-acid batteries will become extinct, as newer technologies in lithium ion and Nickel metal hydride continue to evolve. Because lead-acid batteries are under the hood of virtually every car, advancements in lead-acid technology, however are still being made. New developments in lead-acid technology usually originate in the auto industry. Efficiency ratings are constantly going up, as new sensors and improved materials are helping batteries achieve longer lifespan.
The Trojan battery company, one of the world’s leading manufacturer of deep-cycle batteries, is deeply involved in the research and development of renewable energy (RE) applications for deep cycle batteries. Trojan recently set up a web page dedicated solely to the RE market, (http://www.trojanbatteryre.com/index.html), and keep expanding their AGM product line.