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

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
Northlander

Trolling motor eating up battery power

21 posts in this topic

Hey guys. I have a 65# 24 volt Minkota with auto pilot and I also have the co pilot hooked up. My problem is I am going through juice quicker than I think I should be.

I checked the batteries with both a tester and my on board and regular chargers. Both batteries read full charge. Im only getting about 8 hours out of them. Granted the Minkota will be on anything from 4-9 all the time but shouldnt I get more out of this set up? I know I was before.

So is there anything in the trolling motor that could cause this decrease in battery life? I changed out my 40 amp in line breaker and the other one was fine but I thought maybe it was getting old. That didnt help.

So anyone have any advice or ideas? Its a sudden loss of power after about 6 hours.

Share this post


Link to post
Share on other sites

Sounds like you just tested the voltage? You should bring them to an auto parts store or battery store and have them load tested too. Since it's a 24 volt motor it only takes 1 weak battery (amps, not volts) to affect how the motor runs.

Share this post


Link to post
Share on other sites

Definately get them load tested. I had a similar problem on my diesel truck with 2 batteries.

One had a couple of pretty marginal cells, and when it got cold out it really showed up in weak starts. Both would show good charge and voltage, but when load tested one of them really faded fast.

Share this post


Link to post
Share on other sites

Steve,

If you are up this way, stop in and we can check them. I would have to agree that you have a bad battery. The other possibility is that your motor is starting to go bad and is drawing to many amps. (Bearings going or something like that)

Share this post


Link to post
Share on other sites

Duh! I never thought to load test them. Ill bring them to Interstate and have them check them out. Thanks guys. I love this forum.

Share this post


Link to post
Share on other sites

I didn't think you could "load test" a marine battery and get an accurate conclusion to the integrity of the battery?

Share this post


Link to post
Share on other sites

I dont know but Ill find out in the next 2 days from the boys at Interstate.

Share this post


Link to post
Share on other sites

If you haven't yet, check the water level (if you can, not sure of those batteries, but friend in battery business said there is no such thing as a maintenance free battery...).

First thing we notice when water gets low is shorter run times. Good luck.

Share this post


Link to post
Share on other sites

You didn't say how old the batteries are? My experience is deep cycle batteries start to go somewhere around 3 to 4 years. I have them in the boat and the RV and that is about the time I replace them as the charge life seems to start dropping pretty good about that time.

Share this post


Link to post
Share on other sites

This is the second full summer with them. They are going in today to get a once over by the Interstate Pros. wink

Share this post


Link to post
Share on other sites

Well I think we found the problem. At least I hope it was this simple. Seems the batteries that I thought were only 2 seasons old were actually 4 plus. My starting batteries (reciept I looked at) are 2 years old. Therefore my deep cycle trolling motor batteries were only holding 1/2 capacity, on a load, of what they should even though on my battery chargers and tester they read full charge. Now I hope my on board charger is still doing what it should be after 4 seasons.

The 2 new batteries will get the old Northlander full day test tomorrow. wink

Share this post


Link to post
Share on other sites

I did the same thing with my cranking battery last summer. No juice. Take it to the Intertstate battery guy in town complaining that I just bought the dang thing last summer. He looks it up says it's five years old...My Deep cycle was the recent purchase...needless to say I spent some money on a cranking battery.

Share this post


Link to post
Share on other sites

Money well spent if it keeps you on the water!

Share this post


Link to post
Share on other sites

Duct tape with the date on top of battery helps us keep track of age smile Hope that was the issue for you! I think I have a bad charger in our duck boat - it keeps popping the GFI, but when I use normal charger it does not... hopefully just connection or ground somewhere.

Share this post


Link to post
Share on other sites

Money well spent if it keeps you on the water!

For sure. Went 8 hours with no problem and plenty to spare the past 2 days out.

Share this post


Link to post
Share on other sites

Can I ask what size, make, and warranty you bought? I need to buy some trolling motor batteries and was at walmart and their 27 series Marine batteries only had a 1 year warranty. I didn't buy. What kind of warranty do the Interstate deep cells have??

Share this post


Link to post
Share on other sites

I got 2 of the Interstate SRM-27's. If I remember its a 1 year full warranty and a 2 year pro rated warranty after that.

Share this post


Link to post
Share on other sites

Dude, you prolly already know this......but.....to help keep your new batteries (and older deep cycles also) in their best shape, drain them as close to dead as you can then charge them up.

Just tossing this out there for the guys that may not know. Starting batteries like to be charged and stay charged. Deep cycles like to be drained and slow/trickle charged back to full charge. Keeps them alive much longer.

Good to hear your on the water!!!!!

Share this post


Link to post
Share on other sites

Yup I run them all day then let the on board charger do its thing when I get home. I figure 4 years is a good time for batteries that get used as much as I use mine.

Share this post


Link to post
Share on other sites

Let's see, you thought that you had two year old batteries but they were actually 4 years old? You might want to start looking into the Centrum Silver. I suppose next you'll be forgetting where the crappie holes on Fish lake are. wink

Share this post


Link to post
Share on other sites

Hey goofy I was looking at a reciept because the place I got them at didnt punch the holes on top of the battery. Only way we found out what year they were was Interstae new the code on the side of the batteries.

No Centrum or Viagra needed here. Heck if Im going for 4 hours Im calling all the girls not my doctor. grin

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0



  • Posts

    • arby's fries frozen?  at supermarket?  have to look for them...
    • Oh, just like the Rompers you are wearing around town then.
    • Made some frozen Arby's fries tonight and wow they were great. I would be sold just on the fries alone in this thing.   11mins cooked frozen, better and quicker than the drive thru lol
    • Actually the guy at ace was pretty close. These little guys are for framing steel studs before sheetrocking,  but yes they also could be for sheet metal work even though they are black . But your right hawg sharp and go in fast. 
    • What  a sweet find !!   Even better that you had a camera handy !!
    • Great trade and as of last year I know I wasn't ready to part with Lavine and his potential but that all changed when he went down with the injury.  I hope Lavine becomes a stud for Chicago in a few years but our time to win is now with this addition!!  Great move giving up hope for a top 15 player in the league that plays D is brilliant with the young studs we still have on roster.  Now all we need to do is add another player or 2 in free agency to strengthen our bench and we will be looking good.  Excited for the free agency to start!!! Playoffs here we come!!!!!! GO WOLVES!!!!!!!!!!!
    • http://minnesota.cbslocal.com/2017/06/22/mall-of-america-slips/   Classic case of doctors juicing up a medical claim with a series of failed therapies, creating a life long patient and a corporation with deep pockets to bill for those services.  Think not?  Dont be so naive.  Nobody wanted to fix her, they just wanted to keep billing, sad deal that happens all too often.          
    • That Drouin contract at 5.5 is kind of bad for us right now. Nino is far more proven than him and Granlund has had the beast season out of the 3 of them. Hard to see anything under 5 for each of them. 
    • Looks like the Wild moved Schroeder for....another Schroeder.  Maybe the new guy will be more consistent.   I see Evander Kane is on the trade market.  On the expensive side, but if the Wild decide to move Scandella instead of Dumba, that would free up more money.  A guy capable of scoring 30+ goals with some size would be sweet.     I am thinking Granlund and Nino each sign for in between 4-5$ mil each.  Hopefully less and hopefully Pominville will restructure a little.  Doesn't leave a ton of cap space for free agents or other guys.     Lots of moving parts in Chicago.  They seem to be moving a lot of parts around to try to work with their cap situation.  
  • Our Sponsors