All ULTRAMAX ET series "Liquifix" batteries use AGM technology which consists of an Absorbent Glass-fibre Matting between the lead plates inside the battery. Replaces part numbers: Varta 507 902 011, Exide ETZ7S-BS, Fiam FTZ7S-BS, Yuasa YTZ7S, Varta YTZ7S-BS,Midac CTZ7S-BS, CT6B-3.
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