Lithium lifepo 100 amp batteries?

[aarchdale@coresleep.com]

22 minutes ago, Seth said:

I'd still run a pair of 24v or 36v wired in parallel for redundancy. If one fails, you're not dead in the water or running to Walmart for new batteries. If you're running 12v, you can still swap in a 12v lead battery to get you by.

agree, you can even pair them with a lead acid in a pinch

[TRRANGER]

So you do not think a single 24 volt 100 amp lithium to replace 2 12 volt  31 series lead acid trolling batteries would be a good idea? 

[Seth]

3 hours ago, TRRANGER said:

So you do not think a single 24 volt 100 amp lithium to replace 2 12 volt  31 series lead acid trolling batteries would be a good idea? 

I'm sure it would be fine. I know plenty of guys running a single 36v battery in their river jets and they haven't had any issues.

[TRRANGER]

I run an 80lb Ultrex on an 18ft Ranger 360v with the 2 31 dcm lead acid, did some measuring and a single 24 is to long to fit, bummer. but will 2  100 amp hour lithium be what I want to purchase. For my set up? 

[MrGiggles]

The big downside to running a single 24v is that it prevents you from running any of the common marine onboard chargers. Chargers like the Noco have a lithium setting and will charge them without an issue. 

Two 100ah's are more than enough. Those 31s you were running were probably close to 100ah, but you only had 50-60 available since you shouldn't run them below ~50%. Lithiums can be discharged near 100%.

[TRRANGER]

13 hours ago, MrGiggles said:

The big downside to running a single 24v is that it prevents you from running any of the common marine onboard chargers. Chargers like the Noco have a lithium setting and will charge them without an issue. 

Two 100ah's are more than enough. Those 31s you were running were probably close to 100ah, but you only had 50-60 available since you shouldn't run them below ~50%. Lithiums can be discharged near 100%.

THANKS, for the price of the lithium 100 on Amazon of around $200 to $250 I think giving them a try is worth the discount, I replace my lead acid every 2 years at $150 each and if they only last 5 years I am money ahead. 

[Seth]

4 hours ago, TRRANGER said:

THANKS, for the price of the lithium 100 on Amazon of around $200 to $250 I think giving them a try is worth the discount, I replace my lead acid every 2 years at $150 each and if they only last 5 years I am money ahead. 

This is how I figured it as well. If my lithiums lasted 6 years, it would be a wash on the price. That doesn't take in to account the performance improvements and weight savings. If you've never had issues with your 31s getting weak, you could probably go with the 50AH models. They are about half as long and cheaper. A 50AH lithium is very comparable to a 29/31 series lead battery in run time.

[grizwilson]

My God Son, has been running 3 of these (36v TM) for the past 4 years with good results.  I ran to O'Reilly Sunday afternoon all 3 of my lead acid (2019 models) tested bad, the lithium's have shipped Fed Ex  should be here tomorrow, will still use AGM for my starter.  

https://www.amazon.com/gp/product/B09XMZ9CZB/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&th=1

[aarchdale@coresleep.com]

19 hours ago, MrGiggles said:

The big downside to running a single 24v is that it prevents you from running any of the common marine onboard chargers. Chargers like the Noco have a lithium setting and will charge them without an issue. 

Two 100ah's are more than enough. Those 31s you were running were probably close to 100ah, but you only had 50-60 available since you shouldn't run them below ~50%. Lithiums can be discharged near 100%.

 

When i got my lithiums from amazon i told my buddies ill be the guinea pig and see what happens.  Glad i did it. My boat is a little different now with the weight loss, I think i need a bigger prop

[fishinwrench]

Everybody crows about how long the lithium batteries last, and how they maintain voltage until they just suddenly die.....but I'm not seeing it.  

Sure their performance will TEST good but in the real world......and under a load...... I'm just not all that impressed.  

They are DIFFERENT, but the actual usability doesn't match the hype or the price in my opinion.   There's no free lunch when it comes to portable power, that's the cold hard Truth of it all.