Had a talk with AMARON Dealer here,He said Codes like 42B20L,38B20L etc all are manufacturer codes and has no role in determining its Amps,He said all are 35 Amp Batteries. He quoted 3900RS for AMARON Flo 42B20L @ Kollam,Kerala. Also enquired price at another shop,he said he will call me on tomorrow morning as he is not having it in stock. What say guys?