Commander Series Group Size 35 - 570CCA Popular use: Marine Battery and Automotive Battery Group 35 batteries are rather large and powerful batteries, featuring 20h capacity in 66-110 Ah range, providing 600-1000 CCA, 140-220 minutes RC etc. ... Group 27 batteries are very common in automotive, marine, off-the-grid, RVs, and similar applications, making them one of the most popular battery groups. Call your local Battery World for assistance in choosing the right automobile battery. Order Online and pick up in-store only. As the size and the...