i bought a S5 A08 Bosch AGM Car Battery 12V 70Ah Type 096 S5A08. i'll send you a PM with the link to where i bought it from. Did my research - EFB batteries are normally fitted on our cars. EFB batteries are widely used in vehicles with entry-level start-stop systems, usually without recovery of braking energy. AGM batteries (Absorbent Glass Mat) score with their high performance and durability. EFB batteries have been introduced as a lower tier option to AGM batteries in terms of performance and durability. Hope that helps