Exide EL150L (150AH) is manufactured as per Exide’s proprietary Torr Tubular technology using one of the world’s most exclusive, advanced and state-of-the-art ‘HADI’ high pressure spine casting (at 100 bar) machines, which is not commonly available. With hi-tech R&D center at Kolkata, Exide has developed the high-corrosion resistant and robust spine technology using the HADI process, which ensures a super fine grain structure, for strength, long life and highest reliability. 

This battery most sucessful for Solar system and compare to other models like Exide Solar blitz and Exide Inva Gold plus (Exide IGST1500)
The rating of the battery is C10 , C10 is most commonly used for Solar system.