(1) 24VDC Lithium Battery 50Ah

[OnTheBayouMan]

Does anyone know approximately how long (1) 24VDC 50Ah Lithium battery would last on a 67 lb. thrust trolling motor. Just a ballpark number because I know there are multiple factors involved. I'm trying to figure out if I can get away with using (1) 24v or do I need (2)12v with more Ah's. I usually don't fish ALL day. Thanks 

[Oldfart9999]

If you charge the batteries every trip I don't see where either one wouldn't work for you.
Rodney

[Princeton_Man]

The rule of thumb is that you should find your trolling motor's max amperage draw and double it for full day fishing. So if your trolling motor's max draw is 50 amps, choose a 100ah battery. There's a lot of variables, if you fish in water currents or on a windy day, you're going to draw a lot more on a battery than if you're fishing calm water. Your battery will last a lot longer with your TM running on 2 and 3 than it will on 7 ad 8. If you're only fishing a few hours a day, 50ah should be ok.

Most trolling motor manufacturers will have a chart for their various TMs showing current draw at the various speeds. Running out of battery isn't so bad if you have a gas motor to get back to the ramp. But if you're fishing electric only, you might want to buy more than you need.

[apenland01]

keep in mind the 24v battery will need a different charger than the 12v brethren you might have in the mix....

Two 12v might be a better choice depending on your charger and charging specs...

[mygreenihc]

I currently run 3 - 12 volt 50 AH Lithium batteries running a 36 volt Lowrance Ghost.  I used a 36 volt Fortrex earlier and I have had no issues pulling 12 hour days in a Bullet XRS.  I think I would go with 2 - 50 AH batteries in series if it were me, but the 24 volt battery would be easier to manage.  This question will depend a lot on your boat size and weight,  conditions such as wind and current,  and also the condition of your trolling motor.  If it is fairly new it will be more efficient than one that is worn out.


Hope this helps..
Brad