Lithiums - for the troller

3500 Views 17 Replies 8 Participants Last post by Reverendo, Mar 26, 2020

HPXFLY

Discussion Starter · Feb 18, 2020

So I am in the process of repowering my marquesa, adding a little weight on the back end so Id like to shed it else where. My TM batteries (24v) live in my console and are reaching the end of their life span so im looking at a 24v lithium but all the brands out there make it hard to narrow down. SO does anyone have them, if so what brand do you like and where did you buy from.

Looking for a 24v system to live in my console, TM comes off the boat during the summer but the batteries stay in so if i can reduce weight id like to. I know the cost is there but I like to buy once and cry once, so if i get 10 years out of it I feel I got my moneys worth.

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Smackdaddy53

· #2 · Feb 18, 2020

Lithium Pro

HPXFLY

Discussion Starter · #3 · Feb 18, 2020

Care to elaborate any more ?

Elusive Porpi

· #4 · Feb 18, 2020

Here is my post from over a year and a half ago. they are still going strong. I have just recently replaced my starting battery with lithium as well.

Elusive Porpi said:
I am currently using a AGM as my house battery. But my next battery will be a lithium. As i bought the batteries from China, this was a trail run for them and didnt want to sink too much money into this. Looking back at the shipping cost, i should have just bought a 3rd battery and be done with it.

AH wise, my research shows lead acid can run down to 50% and Lithiums' down to 15% usable AH's. So there is a ~35% gain in usable AH's in Lithiums.
As I've stated earlier, I couldn't kill the 60AH lithiums in 2 days of fishing.
These batteries also charge incredibly fast. After the 2 days of fishing, each battery charged in 2.5 hrs a piece. From what i read, lithioms can charge very fast with no side effects to the battery.

As far as source, It was off Alibaba. the link is below.
Looking back at my reciept, the total shipped to my house, which took 37 days, was $774.50. This includes 2x 60AH 12V batteries, and a 20 Amp single bank charger.
https://www.alibaba.com/product-det...779.html?spm=a2700.8443308.0.0.10853e5f6jUYcS

THese are the batteries installed in my boat. they are smaller than a group 24

US $248.0000

Smackdaddy53

· #5 · Feb 18, 2020

My guide buddies run Lithium Pro 36v batteries on their guide boats they run 4-5 days a week at the jetties on the trolling motor about 90% of the day. They depend on them to pay the bills so it’s good enough for me.

Reactions: 1

Tautog166

· #6 · Feb 21, 2020 (Edited)

Get a single 24v 50ah lifepo4 battery and put your starting battery and tm battery under the console. Will get some weight out from the back and put it in the center. I’m assuming that your starting battery is in back.

I have two 100ah Battleborn batteries in the front and together weigh 62lbs. Have gone on four day trips and never ran out of power. They now make a 50ah 24v battery that weighs 31lbs and should give you more than enough juice for a long day on the troller. Ten year warranty is nice as well.

Reactions: 2

JRHorne

· #7 · Mar 20, 2020

Walter Lee said:
Get a single 24v 50ah lifepo4 battery and put your starting battery and tm battery under the console. Will get some weight out from the back and put it in the center. I’m assuming that your starting battery is in back.

I have two 100ah Battleborn batteries in the front and together weigh 62lbs. Have gone on four day trips and never ran out of power. They now make a 50ah 24v battery that weighs 31lbs and should give you more than enough juice for a long day on the troller. Ten year warranty is nice as well.

That battery is $1,000! I know you've got to pay to play, but holy hell! Will any onboard charger work for it, given it is lithium?

Reactions: 1

Smackdaddy53

· #8 · Mar 20, 2020

JRHorne said:
That battery is $1,000! I know you've got to pay to play, but holy hell! Will any onboard charger work for it, given it is lithium?

Where have you been? Lithiums have always been that high.

JRHorne

· #9 · Mar 20, 2020

Smackdaddy53 said:
Where have you been? Lithiums have always been that high.

I just bought my boat in October! I've never had to buy a boar battery of any type until this spring!

I'm going to end up with one anyway. I was on the fence about getting my new trolling motor in 12v or 24v. The weight and size of these batteries make it an easy choice.

Reactions: 1

Smackdaddy53

· #10 · Mar 21, 2020

JRHorne said:
I just bought my boat in October! I've never had to buy a boar battery of any type until this spring!

I'm going to end up with one anyway. I was on the fence about getting my new trolling motor in 12v or 24v. The weight and size of these batteries make it an easy choice.

Yessir, if I used one enough I’d have a 24v but I might use it 4-5 trips a year if that.

Tautog166

· #11 · Mar 21, 2020

A 12v system will wear a battery down much quicker than a 24v system. If you can, go 24v for added power and run time. Just have to deal with the added cost though.

Reactions: 2

JRHorne

· #12 · Mar 23, 2020

Walter Lee said:
A 12v system will wear a battery down much quicker than a 24v system. If you can, go 24v for added power and run time. Just have to deal with the added cost though.

Is that the same though if I go with 1x 24v Lithium as opposed to 2x 12V standard batteries?

Smackdaddy53

· #13 · Mar 23, 2020

Lithiums and wet cells are two completely different animals.

Tautog166

· #14 · Mar 24, 2020

The voltage on the lifepo4 will remain at or above 12 volts until the charge is depleted. Lead batteries will drop below 12 volts and not provide enough power for the TM, much sooner than the lifepo4.

A 24 volt system with lead acid batteries, either agm or wet should still give you plenty of power in a day. Main advantage of lifepo4 is size and weight and longer runtime.

CKEAT

· #15 · Mar 24, 2020

If you run 12V do an AC / DC charger so it charges on the alternator while running. On a marquesa I wouldn’t recommend but on smaller boat it works well. I will say when I need a trolling motors that much I am likely in the bay boat not the MS.

FSUDrew99

· #16 · Mar 24, 2020

Lithium Pros have a great warranty of 10 years if I believe but I do have a buddy that had one crap out within the first year. Im sure it was a fluke and it was replaced.

If I could do it over again being in Jax I would upgrade my 55lb xi5 to a 80lb 24v xi5 and run a single 24v lithium and call it a day.

Reactions: 2

FSUDrew99

· #17 · Mar 24, 2020

Also speaking with a few battery reps locally they say the lithium prices are dropping a few hundred dollars anually. Overseas most countries only run lithium now and I have no idea why America is so late to the game. The only downfall with a lithium battery is IF it catches fire you cant put it out, but honestly if my AGM caught fire then itll prob burn enough to do some damage and then I'll have some nice new deck/hull work done through insurance haha.

Reverendo

· #18 · Mar 26, 2020

Alright so I've been exploring the possibility of going with lithium batteries as well for my Trolling motor (Minn Kota 24v 70/80#).
While the cost is steep, if I do the math, they'll come out cheaper than replacing regular batteries every 2-3 years... if they are indeed 10 year batteries.
Currently, I'm using a pair of Brute Force Puretron AGM series 34 batteries, inside my console (Mako 18LTS). Being that they are dual purpose, I'm not getting the longevity I thought I would get, which is why I'm considering the lithiums. So I have a few questions about the lithiums:
Minn Kota says their charger will charge the Lithiums if I set the charger to AGM. Fine. But they also warned that Lithiums run hotter when the TM is set to high, and this can ruin the motor. Can anyone verify this?
Also I'm assuming that I'd need a deep cycle version of the lithium, but I'm not seeing many options. Any brands I should be looking at?

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