Guests - If You want access to member only forums on FM. You will gain access only when you Sign-in or Sign-Up on Fishing Minnesota.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
Gator Slayer

Yet another Battery Question.

6 posts in this topic

Will a smaller garden tractor battery work for only starting a 25hp fs motor? I found one rated at 375 cca. I'd like to rearrange some weight in my little 14 ft boat. I'd like to move the deep cycle to up front under the seat. When I fish alone the bow is way in the air and I think this would help alot. Thanks for any advice.

Share this post


Link to post
Share on other sites

That seems a little week to me.

God forbid you would run into motor troubles or flood eng.. The battery would not hold up for much cranking over time.

All I can say is give it a try and see what happens!

Share this post


Link to post
Share on other sites

Go to Google and seach for cold crank amps for 25 hp outboard. The first one that comes up is a Mercury page that shows that for a 25 hp engine, they recommend a minimum of 350 cca, so your 375 would probably work. The thing to worry about is how many starts are you going to get off the smaller battery vs. a larger one. That I don't know, but I think I would rather have a little bit bigger one myself.

Share this post


Link to post
Share on other sites

Assuming your outboard motor will demand quite a bit, it might be able to deliver the cranking amps but its small size will limit its capacity. In other words, you'll be using a significant percentage of the battery's capacity with each startup. Cranking batteries don't work well if they are drawn down too much too often so you may find yourself replacing the battery more often than you hope for.

Bob

Share this post


Link to post
Share on other sites

Quote:

Go to Google and seach for
cold crank amps for 25 hp outboard
. The first one that comes up is a Mercury page that shows that for a 25 hp engine, they recommend a minimum of 350 cca, so your 375 would probably work. The thing to worry about is how many starts are you going to get off the smaller battery vs. a larger one. That I don't know, but I think I would rather have a little bit bigger one myself.


Wow, my 70hp 3cyl Evinrude starter only draws 135 amps. Figure doubling it to have enough CCA and I'm only at 270a.

It does only have a 35 amp charging system though. I forget what the smaller motors are, but I think they are around 18 amps. It would take quite a bit of run time to charge the battery if the motor didn't fire up right away each time.

Share this post


Link to post
Share on other sites

Getting the battery out of the stern will help a 14' er out tremendously. Give the L&G battery a try. Worst that'll happen is you have to pull start it.

5 years ago I put a 7amp hr battery in a Yamaha 110 4 wheeler as its starting battery. Its still in there and working. Never charged it up and its sits all winter.

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • vanwalleye
      I was thinking the same thoughts, I saw the pond by my house locked up, figure someone will be sitting in front of the courthouse before you know it..
    • Jim Uran
      I have to add that my buddy has had the Eskimo propane auger and loves it, he has a season and half using it and it hasn't given him any problems. 
    • Jim Uran
      I've had an Eskimo Shark for a few years and I love it, I'm not a fan of the aluminum handles on it, they have given me an issue or two but customer service is outstanding. Can't comment on the EVO, other than  I think they are gimmicky, but I love their six sided insulated hub. Works great for my family trips or just going out by myself. Sets up easy and there is a ton of room. 
    • papadarv
      Vexilar makes many "fish finders" what model do you have. Is it a flasher, a graph, WiFi type. Will help in knowing what your looking at when running your finder.
    • Cliff Wagenbach
      brianfisher, Welcome to Fishing Minnesota! Using a flasher in open water is way more difficult then using a regular depth finder! It takes a lot of study time to really learn to recognize what it is showing you! Basically anything marked even slightly off of the bottom is likely a fish unless there is a lot of floating weeds etc. in the water column. I suggest that you get out on the ice with your friend this winter and use his flasher through the ice. You will very quickly learn to adjust the gain settings and learn to recognize fish under a controlled depth condition! If possible have someone that is familiar with his flasher model go with you and show you how to operate it. Once you learn to read a flasher your fish catching rate will go way up! Cliff