Batteries charged at the lower voltage met BCI voltage standards for a fully charged battery. The Duralast 51R-DL is part of the Car Batteries test program at Consumer Reports. In our lab tests ...

Batteries charged at the lower voltage met BCI voltage standards for a fully charged battery. The Duralast Platinum AGM 51R-AGM is part of the Car Batteries test program at Consumer Reports.

and Mercedes-Benzes), the Super Start Platinum AGM 51R-51RPLT was tops. Battery life and cold-weather performance earned excellent ratings while reserve capacity was rated good. At $250 ...