- May 14, 2008
- 3,538
- Boat Info
- 1988 390 EC
- Engines
- 454 Mercruiser Gassers
I completely rewired my batteries on the 390 years ago. I got rid of the stock 4-battery box and built a new one out of 3/4" marine plywood and installed the following batteries.
1 - 12V. cranking battery dedicated for starting both engines
1 - 12 V. cranking battery dedicated for the windlass & generator
4 - 6V. 245 A/H golf cart batteries wired series/parallel for everything else (no problems with 4-day long weekends even without the genny)
I religiously checked the water levels in these batteries 3 times per season & after 8 years they are still going strong.
1 - 12V. cranking battery dedicated for starting both engines
1 - 12 V. cranking battery dedicated for the windlass & generator
4 - 6V. 245 A/H golf cart batteries wired series/parallel for everything else (no problems with 4-day long weekends even without the genny)
I religiously checked the water levels in these batteries 3 times per season & after 8 years they are still going strong.