I wanted to increase my house battery capacity from the original 420 amp-hours (2 Fullriver DC-210 batteries) to what I had in my Manta 40 (660 amp-hours). I used the same basic configuration: 6 (3 pairs) Lifeline GPL-4CT. I put four in the main battery compartment and two in the secondary compartment. I did not have to redo any of the main wiring. The one pair in the compartment by the stove fit in the existing battery box. The attached photo shows how I mounted the others in the compartment by the power panel. I can provide more detail for anyone who is interested. An ABYC certified technician gave me some help to be sure the installation is ABYC compliant.
