Hello! After 7 1/2 years I need a new battery for my boxster 2.7 year 2000. Varta and Bosch offer a battery (Varta Blue Dynamic – Bosch S4 010) with identical data, namely battery capacity 80AhCold test current EN 740ALänge 315mmWidth 175mmHeight 175mm Who knows each other? Is there anything? e Problems? Thank you!