Rolls Surrette Solar Battery, 6V, 550 AhrThe Rolls S 550 S6 L16 HC is among the most popular batteries for small and mid size home energy systems! Surrette quality, long life, high capacity and reliable performance in a manageable building block. The life expectancy of Surrette batteries is among the longest in the industry. These high capacity 6V batteries are wired in series to make 12, 24 or 48VDC battery banks. With 550 Ahr @ 6V at a 100hr rate, the S 550 is the best selling solar