You guys that are running 24V TM, 31 series AGM's on a 190 or 195, how many hours can you run in a day before your batteries give out?
You guys that are running 24V TM, 31 series AGM's on a 190 or 195, how many hours can you run in a day before your batteries give out?
I have never ran out of juice yet. Batteries are 3 years old. I do not fish all day if it is really windy out though.
Our Saturday tournaments are 10 hours and 7 hours on Sunday. I wasn't making it all day Saturday on Exide 31 Maintenance Free so I switched out Duracell 31 AGM's.Originally Posted by Transom
I have fished 10 hours with group 27 lead acid Evetstarts and never ran out of power.
I forgot to plug my boat in after a Saturday tournament and ran all day Sunday without charging overnight. That was with the (old) lead acid Exide's, but these new maintenance free left me dead in the water on a Saturday afternoon.
Obviously your question depends a lot on the conditions (Current/Wind/Boat size) and the speed you need to run your Trolling Motor at. Most 24v TM's can only run 3 hours continuous on high speed. Medium speeds buy you about 6 hours. Low speeds get you between 15-20 hours. That is with two 100AH Lead Acid or AGM's batteries. Which since you can only run them to 50% before you are dropping below 12v and damaging there longevity. Understand, that is continuous use. So if Your in a low profile boat, light current and wind, you can likely go a couple days, maybe more. If your in a deep V and fighting current in a river or on a lake with 15mph winds, you better charge up at the end of the day if you make it all the way through a 8-10 hour day. The other issue with LA and AGM is once you drop below 12v at 50%, you're suppling less than 12v to devices meant to run on 12v. Some of them don't like that much such as fish finders that will shut down not much under 12v.
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This means you get a little more than half as many hours as Lithium which you can safely run down to 10%. That's why many that are running 24v and 36v go Lithium instead of Lead or AGM's.
LiFePO4-Battery-Voltage-Charts-Image-8.jpg
The fact that you get to actually USE 90% of the Rated AH's, that they're significantly lighter and that if taken care of (Not run down below 10% and fully recharged after use) they will last thousands of recharging cycles vs. hundreds for LA/AGM, Makes their price a better proposition. They ain't cheap but they're getting cheaper every year. Within a few more, It's my opinion that we will all be using them for Trolling Motors. They have a way to go to develop solid starting batteries but they are starting to show up on the marine market.
Last edited by CincyGus; 07-07-2022 at 12:08 AM.
2023 Targa V-19 Combo
Mercury 200hp XS XL Four stroke
Garmin Force TM-36v Ionic Lithium Batteries
Best Speed to date: 51.2mph
BEST/WORST: Storage/ Compartment moisture
I've found that the Fortrex I bought in 2014, followed by the Ultrex in 2018 have been easier on batteries than any I've owned in 40 years. I switched to 31 AGM Duracell 2 years ago and they've been fantastic. Fished a 6 hour tournament in 15mph winds and never had a problem. Before the Duracells, I exclusively used the Interstate 27s and had problems with my starting battery when I went to dual 7" Helix.
2015 Ranger RT188 DC; BassCat Storage Box; Mercury Optimax 115ProXS;
19" Spitfire X7; Vessel View Mobile; Minn Kota Ultrex 80; GForce Handle;
TM Eliminator; Helix 7 G2N SI Combo F/R; HydroWave KVD; BBT 4" Angled Bow Mount; Durasafe Locks for Electronics and Ultrex;
Twist Step Boarding Ladder; EZEE Step ES1; BAC RAC Rod Storage; Motor Mate Transom Saver
It is no surprise that you had problems with Interstate.
My TM is an older Motorguide Tour Digital, running on 2 group 31 Duracell AGM's. No problem fishing 2 days with them.
I have a 80 minnkota ultrex and I run everstart 29's in my tx 190 and I'll use them 11 hr a day and don't even draw them halfway down
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