Trolling motor battery

[trimmer21]

Which boat are you using ? Where (lake or with river stream)? Wind conditions?
What is the trolling motor trust poundage?

I run a 17' back troller with 25Merc 4 stroke. Big lakes like Scugog,Rice,Big Rideau and Bernard, Otonabee River/Trent Canal. The troller is a Motor Guide 48lb on a bow mount. The boat's older with all the goodies and a new Merc,but,it works better than most new rigs and takes high water like crazy.

[newbiehunter]

I run a 17' back troller with 25Merc 4 stroke. Big lakes like Scugog,Rice,Big Rideau and Bernard, Otonabee River/Trent Canal. The troller is a Motor Guide 48lb on a bow mount. The boat's older with all the goodies and a new Merc,but,it works better than most new rigs and takes high water like crazy.

So double 27ah in series gives about 8 hours runtime for 24V motor.. wow. That's amazing!

I am in "deep dive" research now about whether to invest into Minkota endura max 12v +100ah lifepo4 battery

To be installed in 17ft canoe for a week (or 2 week) trips to northern rivers with pretty strong current. Essentially the idea is to motor upstream and drift down however cannot figure out the charge situation (no shore power) and whether it would give a sufficient runtime for 10-15km (total) upstream runs.

Any experience/advise?

[trimmer21]

So double 27ah in series gives about 8 hours runtime for 24V motor.. wow. That's amazing!

I am in "deep dive" research now about whether to invest into Minkota endura max 12v +100ah lifepo4 battery

To be installed in 17ft canoe for a week (or 2 week) trips to northern rivers with pretty strong current. Essentially the idea is to motor upstream and drift down however cannot figure out the charge situation (no shore power) and whether it would give a sufficient runtime for 10-15km (total) upstream runs.

Any experience/advise?

That distance upstream against the current will use up a lot of juice,for sure. Without shore power to recharge,I think you'll likely have a problem. Take an extra battery and maybe run a generator to recharge?

[FishHog]

Yep,I have two in series that work quite well. I'm getting 8 hrs continuous run time and recharge after every time out. Most of the time,though,I use the troller for positioning keeping me on weed lines or drop offs, then, I can use it for days.

Next time your out test the voltage on return and see what charge rate your at. If below 12.06 or 50% don’t expect those to last very long. It will work but dramatically shorten the life of the battery

[trimmer21]

Next time your out test the voltage on return and see what charge rate your at. If below 12.06 or 50% don’t expect those to last very long. It will work but dramatically shorten the life of the battery

Will do. So far,so good,though. My last battery was a Nautilus that I used for almost 12 years before it would no longer take a charge. The second Nautilus I'm using for lights,pumps and engine start that's 5 years old is still strong. I have two 27aH batteries on a separate system for the troller,another Nautilus (5 years old) and the new Kirkland. I've had great service from them all. I believe the key is to charge them after each use to keep them up.

[Species8472]

So double 27ah in series gives about 8 hours runtime for 24V motor.. wow. That's amazing!

I am in "deep dive" research now about whether to invest into Minkota endura max 12v +100ah lifepo4 battery

To be installed in 17ft canoe for a week (or 2 week) trips to northern rivers with pretty strong current. Essentially the idea is to motor upstream and drift down however cannot figure out the charge situation (no shore power) and whether it would give a sufficient runtime for 10-15km (total) upstream runs.

Any experience/advise?

So my Zodiac has +/- 40 km range with 200 aH of 12 volt LifePO4. It is 13 feet long with 5 foot 6 inch beam and weighs 250 lbs empty. Against current I have no idea.

Motor is a 55 lb thrust Minn Kota

You should compare to a 2.5 to 4 hp short shaft tohatsu or similar as that may be a better option.

Also max speed on a trolling motor no matter the thrust is about 8 km/hour. So at max throttle the best speed will be roughly 8 minus the current speed in km/hour when against the current. If current is faster then 8 you will go backwards.

Coincidentally 8 is also about the max speed 2 guys with good technique can paddle a loaded canoe.

[newbiehunter]

So my Zodiac has +/- 40 km range with 200 aH of 12 volt LifePO4. It is 13 feet long with 5 foot 6 inch beam and weighs 250 lbs empty. Against current I have no idea.

Motor is a 55 lb thrust Minn Kota

You should compare to a 2.5 to 4 hp short shaft tohatsu or similar as that may be a better option.

Also max speed on a trolling motor no matter the thrust is about 8 km/hour. So at max throttle the best speed will be roughly 8 minus the current speed in km/hour when against the current. If current is faster then 8 you will go backwards.

Coincidentally 8 is also about the max speed 2 guys with good technique can paddle a loaded canoe.

Low speed is not a problem at all. (I don't think they current is above 8kmh on rivers we use it on)

Originally, also considered a gas motor, however the weight/maintenance and had me arrive to electrical with large batteries

Thank you for the info though.
Good to get to real field numbers for comparison [emoji16]