Optima Batteries 8071-167 D51 YellowTop Dual Purpose Battery Review

Best Group 51 Car Batteries: Top Picks for 2021

Group 51 batteries (as well as Group 51R – with reversed terminals) are among the most popular group sizes for car batteries. According to the BCI (Battery Council International), Group 51 batteries measure about 9.3″ (L) x 5.0″ (W) x 8.75″ (H). If your car uses a Group 51 battery, and you’re looking for a […]