Cheapest drop in lithium iron phosphate battery.

[floridianman27]

And you're not longer in the "drop in" category either way.
Might as well consider the 280ah cells being bandied about for a group order by Craig.
You will likely have a LOT of folks to learn from (aka copy).

I’m looking for those post that members talk a about how to build batteries. I’m looking to build a trolling motor battery for my boat. 36v battery with a range of 70-100 amp outs. I’m new to this and trying to figure out how many of what cells to make that kind of set up.

 

[Edke6bnl]

I found a 138ah Valence 12v on Ebay for just under $600 delivered. Heck of a battery.

paid about $430 shipped for a valence. do not believe that have the balance board? All I can say has worked great in my trial for a year now 138 ah.

 

[adapotato]

$360 shipped for 60Ah

60Ah Lithium Battery (LiFePO4) - Available Late April!

The best lithium battery for small boat and Kayak trolling motors. This battery will outperform all 50AH Lithium batteries on the market today at 12lbs 10oz with a true 55AH usable power! Best price in the USA with our direct to consumer pricing. Order one today and see what everyone is taking...

ampedoutdoors.com

$324 shipped after applying code "RXAngler"

 

[Darkstar]

Cheapest 100Ah are about $700 delivered.
Costco had sales for about $600.
What is your budget for a 100Ah?

Costco has lithium batts? Link?

 

[Archetype-IS]

Costco has lithium batts? Link?

The promotions are back for 2 Lion Energy UT1300 for 1399 USD. And 2 UT700 for 730 USD. Expired 9/13/2020. Costco membership required.