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EURO 5 and EURO 6 battery charger selection and smart alternator operation explanation

Euro 5 and Euro 6 requirements have made changes to the way vehicle alternators work and the Ablemail Battery Charger Selection Guide.pdf explains some of the changes and how they affect alternator /B2B charger design and selection and are leading to the replacement of the traditional split charge relay in many applications . Hopefully this explains some issues with secondary battery charging in vans,motorhomes and caravans 

This information has been gathered from a considerable amount of testing and we think it helps to explain why a B2B charger is often required with Euro 5 and Euro 6 compliant vehicles that have incorporated smart alternator and regenerative braking into their systems .

If you have any questions or just want to discuss ring +44 (0) 161 745 7697 or email