I've got a new TM coming.
Are there any sizing calculations or rules of thumb on what sized Amp-Hour batteries that I should be looking for?
What size batteries do you use for 80# thrust TMs?
Thanks,
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I've got a new TM coming.
Are there any sizing calculations or rules of thumb on what sized Amp-Hour batteries that I should be looking for?
What size batteries do you use for 80# thrust TMs?
Thanks,
A pair of good quality group 27 batteries is the minimum you want IMHO.
Thanks, PanMan
I had heard Group 27 before, Just didn't know that was related to Amp-Hours.
I would seriously look at the 30 or 31 group. You will always have power all day with them.
I have always used AC Delco, and was just looking and this set are 5 years old and still run all day with no problem. But I think I will change them next month to be on the safe side.
Thanks for the info. I got a copy of the manual from the vendor. It says at least a 115 AH battery.
According to this link ( Deep Cycle Battery FAQ ), that would be a Group 31 battery.
Thanks
There is one rule for batteries: Get the biggest dang ones you can shoe horn into the space and consider adding more space.
Wannabe...
That is a good link and as it tells you deep cycle batteries are rated in amp hours. This is the figure you want to look closely at. As you know an 80 lb motor is a 24V system and requires 2 batteries. Ideally you want 2 identical batteries (age, size, type and make). Any 2 deep cycle batteries will work. However the smaller they are in amp hours, the less time you will have for trolling. General rule of the thumb is get the biggest (amp hour) that will fit and you can afford. You never know when the fish will turn on big time and you just don't want to have to quit because you run out of trolling power. Also remember the most important things you can do to prolong their life is keep fluid levels up, keep connections clean and tight, and RECHARGE ASAP after EVERY use.
RC is a hair more useful for TM applications since it's measured at a current draw that's more similar to TM use than the ones that are used for AH. A typical Group 27 will have around 180 minutes RC, and a big dog like the Trojan SC225 is 225 minutes RC, and the Everstart Maxx 205-210 minutes.
When I bought my new 80 lb thrust Terrova, I also bought two new group 27 Interstate batteries. I use this TM for 7 to 10 hours a day and have yet to run it down.
A month ago we camped out for three days. We'd fish from 7 to noon, stop, eat lunch and take a little siesta and get back at it around 2:30 and fish till 7 or 8.
After 3 days without recharging, my batteries were a little less than half charged. I could have fished at least another day this way, maybe more.
Don't skimp on the batteries. Get good ones and recharge as soon as you can. I'm adding a DC charger to the boat just for those remote, extended stay campouts!
let us know how they do please, I am looking at a swap out soon myself
I use 2 optimas D34 series and they last all day may two never tried as I always charge as soon as I get home.
How big is your boat? How long do you fish at a time? Are you always able to charge overnight?
I think its a waste to get huge batteries and not use them and just add weight to the boat.
Did a test run today. Pulling crankbaits for about 5 - 6 hours ( minus some time untangling lines but that's another story ).
Got home, hit the test button on the Trolling motor and all bars lit up!
And the bonus was that I even got to clean some fish.
Another bonus was that I caught my first sauger ever. That's a pretty fish.