Basic Battery Question

[L&L]

We have a 225 Sea Ray; two batteries. Just putting them back in for the new season. Is the cranking battery always the forward one and #1 on the shut off switch? Or does it vary from model to model; year to year? I cannot see the back of the shut off to trace the lines so hoping there is a standard configuration. Thanks.

 

[scoflaw]

Install 1 of the 2 and see which 1 it is on the switch and if it's the 1 doing the cranking.
Betting they both will crank the engine, but now you will know which switch position controls your deep cell battery

 

[Lazy Daze]

Yup. There is no standard to this. All depends on who installed it. As mentioned, just use a simple process of trial and error. Once you figure it out, take a black Sharpie and write the correct number (1 or 2) on the positive cable's protective boot.

 

[L&L]

Thanks gentlemen. Makes sense. Have a good boating season out there.

 

[OllieC]

The forward batt is #1. The aft batt is #2. Doesn’t matter which one you use or dedicate. I typically switch to #2 for “house” and reserve #1 for cranking. Then while underway I switch to both.