Join Date: Jan 2007
Location: The house is in Kingsport, TN. Boats are on Watauga Lake and in New Bern, NC
Thanked 52 Times in 47 Posts
Rep Power: 11
I have two group 29 125 Ah Energizer flooded lead acid batteries from Sams in my port locker battery compartment. They are the "house battery". My boat is tiller steered, so I have spots for two more batteries where you wheel steered boats have a quadrant. One is easy to service through a covered opening at the foot of the quarter berth, and my "engine battery" (another group 29) is mounted there. The second spot is accessed through the engine compartment, is too hard to service, and is currently empty. The three batteries at Sams were about $75 each. This is my second set. The first set I swapped out last year after four years because we were planning on spending five months in the Bahamas, and I just wanted new.
The boat has engine drive refrigeration, so the only time I bump up against an battery problem is when sailing overnight with the nav lights, radar, chartplotter, a fan, and light or two on down below. About 4am I will start the engine to bring the house battery back up. At anchor I would have started the engine at 9am for an hour or so to cool the freezer.
At some time I may put a smaller (Gr 24) AGM in the unused spot for the engine battery and add the third Gr 29 to the house bank. I just need to figure out how to manage the differing charging voltages of flooded and AGM batteries. Or, I could put another flooded lead acid battery in the unused spot, but I would need to figure out how to easily service it.
1988 PSC 34