Montauk 17: Three Batteries in the Console - Moderated Discussion Areas

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Author Topic:   Montauk 17: Three Batteries in the Console

Morgan posted 03-07-2012 01:17 PM ET (US)
Does anyone have three batteries in the console of their Classic Montauk 17? If so, can you share pics or let me know how you got them to fit.
I'm currently rigging up my montauk and have added a gps, fish finder, bait tank, and removable rigging light. I want to add a trolling motor, but figure I will need an additional dedicated group 27 batttey in addition to the two group 27 batteries I'm already getting. I don't want to loose all my bait and electronics because I ran my trolling motor too long.
Because of the rigging tunnel, it appears I will only be able to fit two group 27 batteries in the console. I was going to cut out the floor in the shape of battery boxes and drop them in on each side of the tunnel. I could put a third battery box on the console floor, but I'm afraid it would break it. The only option I can think of is to replace the console floor with starboard for added strength. Let me know your thoughts.
newt posted 03-07-2012 04:50 PM ET (US)
I maxed out at two batteries in my console. I cut the floor out and set the batteries on the deck, but prior to making that mod, I used a piece of lumber wedged between the deck and the console floor as additional console floor support. I would suggest a simple solution like a rot proof wedge instead of replacing the console floor with starboard.
Jefecinco posted 03-08-2012 10:51 AM ET (US)
If vertical clearance is sufficient you may be able to stack a third battery above the other two.
If you are using AGM batteries you will not need frequent access to the batteries to check electrolyte levels or clean the terminals, etc, so they would be the best "stacking" batteries.
Butch
20dauntless posted 03-08-2012 10:55 AM ET (US)
Does your outboard have enough charging capacity for that many amp hours? A lot of the older outboards only have ~10 amps available for charging, so it would take a lot of hours of running to recharge a couple of 50% discharged group 27 batteries.
If you have access to shore power each night a battery charger could make this work.
Teak Oil posted 03-11-2012 09:44 PM ET (US)
How about you use your two big batteries for the trolling motor and accessories and another battery in the rear for the main engine?
It seems like you are set on having two batteries to start your engine, but one is plenty. If for some reason you needed more starting power you could use one of the console batteries and some jumper cables in parallel to start you main engine
andygere posted 03-12-2012 12:31 AM ET (US)
AGM batteries with equivalent amp hours to lead acid batteries are often much smaller. I replaced my group 27s with a pair of Optimas that fit inside group 24 boxes. Three of those might fit inside your console.

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Author	Topic: Montauk 17: Three Batteries in the Console
Morgan	posted 03-07-2012 01:17 PM ET (US) Does anyone have three batteries in the console of their Classic Montauk 17? If so, can you share pics or let me know how you got them to fit. I'm currently rigging up my montauk and have added a gps, fish finder, bait tank, and removable rigging light. I want to add a trolling motor, but figure I will need an additional dedicated group 27 batttey in addition to the two group 27 batteries I'm already getting. I don't want to loose all my bait and electronics because I ran my trolling motor too long. Because of the rigging tunnel, it appears I will only be able to fit two group 27 batteries in the console. I was going to cut out the floor in the shape of battery boxes and drop them in on each side of the tunnel. I could put a third battery box on the console floor, but I'm afraid it would break it. The only option I can think of is to replace the console floor with starboard for added strength. Let me know your thoughts.
newt	posted 03-07-2012 04:50 PM ET (US) I maxed out at two batteries in my console. I cut the floor out and set the batteries on the deck, but prior to making that mod, I used a piece of lumber wedged between the deck and the console floor as additional console floor support. I would suggest a simple solution like a rot proof wedge instead of replacing the console floor with starboard.
Jefecinco	posted 03-08-2012 10:51 AM ET (US) If vertical clearance is sufficient you may be able to stack a third battery above the other two. If you are using AGM batteries you will not need frequent access to the batteries to check electrolyte levels or clean the terminals, etc, so they would be the best "stacking" batteries. Butch
20dauntless	posted 03-08-2012 10:55 AM ET (US) Does your outboard have enough charging capacity for that many amp hours? A lot of the older outboards only have ~10 amps available for charging, so it would take a lot of hours of running to recharge a couple of 50% discharged group 27 batteries. If you have access to shore power each night a battery charger could make this work.
Teak Oil	posted 03-11-2012 09:44 PM ET (US) How about you use your two big batteries for the trolling motor and accessories and another battery in the rear for the main engine? It seems like you are set on having two batteries to start your engine, but one is plenty. If for some reason you needed more starting power you could use one of the console batteries and some jumper cables in parallel to start you main engine
andygere	posted 03-12-2012 12:31 AM ET (US) AGM batteries with equivalent amp hours to lead acid batteries are often much smaller. I replaced my group 27s with a pair of Optimas that fit inside group 24 boxes. Three of those might fit inside your console.