Batteries for Trolling Motor in Forward Dry Storage

[Starling]

Hi,
I'm gonna end up with 5 batteries on my 89' SF20. I have 2 under the helm and need to locate 3 more group 31's. I'd like to fit them in the dry storage with some modifications if I can so I can keep the fish box available. Is this doable?

[Old'sCool]

That's my plan also when I get there.

[fishstu]

Why go with (3) 31 lead acid battery's - 3 x 60lb = 180lb ?
I have the Lithium Ionic 45 lb, 36v 50ah which is now $1050, which fits into the console next to my (2) boat battery's. Game changer on the 20 SC - plus cleaner, simpler install.

[strick]

Originally Posted by Starling

Hi,
I'm gonna end up with 5 batteries on my 89' SF20. I have 2 under the helm and need to locate 3 more group 31's. I'd like to fit them in the dry storage with some modifications if I can so I can keep the fish box available. Is this doable?

This sounds crazy to me why the need for 5 batteries in a 20 foot boat?

strick

[Kithogue]

does it take 3 group 31s to run effectively rhodan? was thinking about once we finish but thats a lot a battery.

[Old'sCool]

The 24V only shows being offered up to 72" where the 36V is 84" and 96". Their formula to figure shaft length is (Bow Height”) + 18” +(Wave Height”/2) = (Shaft Length”). Thinking out loud here; If I use 40" for bow height and 36" (probably not happening) for wave height, I get 76". Using 24" wave height I get 70". I would imagine the 24V is cutting it close as they're not effective out of the water.

Does anyone here have one on a 20' SF?

[fishstu]

Originally Posted by Old'sCool

The 24V only shows being offered up to 72" where the 36V is 84" and 96". Their formula to figure shaft length is (Bow Height”) + 18” +(Wave Height”/2) = (Shaft Length”). Thinking out loud here; If I use 40" for bow height and 36" (probably not happening) for wave height, I get 76". Using 24" wave height I get 70". I would imagine the 24V is cutting it close as they're not effective out of the water.

Does anyone here have one on a 20' SF?

I fitted one on my 2001 SC 20 MA last year - see the link below

http://www.classicseacraft.com/commu...ad.php?t=30249

I spent a year goin thru the different options and am very happy with my chioce.
60 inch shaft works fine, 36v is better than 24v in areas that have rip currents.

Ask any questions

[HatTrick]

I have had a 80lb. 60" 24V MK on my 1986 20' CC for two seasons here in the NE. 60" shaft is fine. The 80# 24V is fine for me, it works pretty hard in a strong rip, so if that is your application go 36V 100#. Yes, gel batteries are heavy and all batteries are expensive.