Driving the growth is strong demand for batterypowered products like cellular phones and digital cameras. Market gains will also be supported by the continuing shift toward more expensive batteries such as lithiumbased cells. Lead-acid batteries will account for nearly 60% of all secondary battery sales in 2009, but lithium ion, lithium polymer, and nickel-metal hydride batteries will experience the strongest growth. These projections are based on a study by The Freedonia Group, Inc., a Cleveland-based industrial market research firm.