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popularRed_Liz | Staff posted Oct 16, 2025 05:12 PM
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popularRed_Liz | Staff posted Oct 16, 2025 05:12 PM

Eco-Worthy 12V 100AH LiFePO4 Lithium Battery for RV Solar Panel $115.50 + Free Shipping

$116

$200

42% off
eBay
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Eco-Worthy-US via eBay [ebay.com] has Eco-Worthy 12V 100AH 1280Wh LiFePO4 Lithium Battery for RV Solar Panel on sale for $153.99 - additional 25% off when you apply coupon code HOSTWITHMOST at checkout = $115.49. Shipping is free.

Product Features:
  • 4000+ cycle times, each lithium battery can run for more than 10 years (equivalent to 3 lead-acid batteries)
  • Reach 80% of power after one-hour charge
  • Up to 4 identical batteries can be mounted as a series
  • 22.93-lbs
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Deal Details
Community Notes
About the Poster
Eco-Worthy-US via eBay [ebay.com] has Eco-Worthy 12V 100AH 1280Wh LiFePO4 Lithium Battery for RV Solar Panel on sale for $153.99 - additional 25% off when you apply coupon code HOSTWITHMOST at checkout = $115.49. Shipping is free.

Product Features:
  • 4000+ cycle times, each lithium battery can run for more than 10 years (equivalent to 3 lead-acid batteries)
  • Reach 80% of power after one-hour charge
  • Up to 4 identical batteries can be mounted as a series
  • 22.93-lbs

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16 Comments

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Oct 16, 2025 08:01 PM
444 Posts
Joined Sep 2022
BrianRangeOct 16, 2025 08:01 PM
444 Posts
Slick deal. I bought one of these in July of 2024 for $199.99. I've been using it for the trolling motor on my jon boat. It's been great. Half the weight and twice the capacity of the 50AH SLAs that I had been using. If your trolling motor has a "fuel gauge" it likely won't read correctly. I got a cheap, waterproof, inline voltage meter that you can set up for LifePo4 to show % of usable charge left.
1
Oct 16, 2025 11:28 PM
1,259 Posts
Joined Nov 2010
JusthathoughtOct 16, 2025 11:28 PM
1,259 Posts
Good price for a decent lifepo4 with 3 year warranty
1
Oct 16, 2025 11:33 PM
593 Posts
Joined Aug 2011
5.riversOct 16, 2025 11:33 PM
593 Posts
Quote from BrianRange :
Slick deal. I bought one of these in July of 2024 for $199.99. I've been using it for the trolling motor on my jon boat. It's been great. Half the weight and twice the capacity of the 50AH SLAs that I had been using. If your trolling motor has a "fuel gauge" it likely won't read correctly. I got a cheap, waterproof, inline voltage meter that you can set up for LifePo4 to show % of usable charge left.
Which voltage meter are you using please share.
Oct 16, 2025 11:54 PM
3,084 Posts
Joined Dec 2009
RyanMPLSOct 16, 2025 11:54 PM
3,084 Posts
Quote from BrianRange :
Slick deal. I bought one of these in July of 2024 for $199.99. I've been using it for the trolling motor on my jon boat. It's been great. Half the weight and twice the capacity of the 50AH SLAs that I had been using. If your trolling motor has a "fuel gauge" it likely won't read correctly. I got a cheap, waterproof, inline voltage meter that you can set up for LifePo4 to show % of usable charge left.
I use for trolling motor as well (and the occasional power outage w/ inverter). One thing to note is that, on my lil Minn Kota Endura C2 30, the manual warns not to run at 100% throttle for extended times on lithium because of how long and stable the voltage curve is. I don't recall but I think for extended runs 80-90% or something like that so they are not pushed past manufacturing specs. Might not be true for newer or diff makes and models. My motor is only two years old.
1
Oct 16, 2025 11:56 PM
98 Posts
Joined Nov 2004
cdawesOct 16, 2025 11:56 PM
98 Posts
I have 2 of these that I move around from my truck (12v fridge), boat (trolling motor) and pop up camper, and bought them about 6 months apart, both for more than this one is listed. Great battery for the price, and I waited for their charger to go on sale and picked that up too.
1
Yesterday 12:10 AM
4,795 Posts
Joined Jul 2015
hinnyYesterday 12:10 AM
4,795 Posts
What kind of charger would one need to install with this battery in a car for 12V fridge?
Yesterday 12:26 AM
351 Posts
Joined Oct 2014
TungV9142Yesterday 12:26 AM
351 Posts
i already have a 400w solar panel that charges my EcoFlow Delta 3 Plus. how do i get this 12v into the mix?

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Yesterday 02:15 AM
690 Posts
Joined Jul 2019
WoodSlayR
Pro
Yesterday 02:15 AM
690 Posts
Quote from hinny :
What kind of charger would one need to install with this battery in a car for 12V fridge?
They make DC to DC chargers if you want to charge it while you are on the road driving or at least while you're running/idling the engine. It'll divert some of the alternator's power to your LiFePo4 battery with the proper voltage your LiFePoo4 battery likes.. Search DC to DC chargers on Amazon, you'll find tons of them. With something like thishttps://www.amazon.com/Battery-Charger-Compatible-Batteries-Charging/dp/B0DF2XXML8/ref=sr_1_3_sspa?c... [amazon.com] and with this, you could always add solar down the road because it has a built in solar charge controller. very convenient. This would charge this battery in about 2 hrs from 0 to 100% with just alternator power.
Last edited by WoodSlayR October 16, 2025 at 07:20 PM.
Yesterday 02:49 AM
1,365 Posts
Joined Apr 2008
bigjonneeYesterday 02:49 AM
1,365 Posts
I have one allows 12v charging from a cigarette lighter. Or get a Dc step up converter and step up this 12 volts to 18 or 24 or whatever your powerbank uses for charging and plug the stepped up voltage into the charging port.

edit: what a suggest would need it's own charger connected to this battery as well. some power banks are meant to be chained together and might work through one of those ports depending what the intended voltage was of the power banks internal battery etc.
Yesterday 05:38 AM
5 Posts
Joined Nov 2009
spongeracerYesterday 05:38 AM
5 Posts
Have one in my snowmobile enclosed trailer, it's hooked on solar panels, powers, a ton of LED lights, and a diesel heater. Also have an inverter to run hand and boot warmers.
Yesterday 03:51 PM
2,428 Posts
Joined Aug 2006
Fletch113Yesterday 03:51 PM
2,428 Posts
Quote from spongeracer :
Have one in my snowmobile enclosed trailer, it's hooked on solar panels, powers, a ton of LED lights, and a diesel heater. Also have an inverter to run hand and boot warmers.
Do you have issues with the battery holding charge and recharging in temps below freezing?
Yesterday 05:58 PM
444 Posts
Joined Sep 2022
BrianRangeYesterday 05:58 PM
444 Posts
Quote from 5.rivers :
Which voltage meter are you using please share.
This one: https://www.amazon.com/dp/B08HV99...e_0_0&th=1
Yesterday 06:01 PM
444 Posts
Joined Sep 2022
BrianRangeYesterday 06:01 PM
444 Posts
Quote from RyanMPLS :
I use for trolling motor as well (and the occasional power outage w/ inverter). One thing to note is that, on my lil Minn Kota Endura C2 30, the manual warns not to run at 100% throttle for extended times on lithium because of how long and stable the voltage curve is. I don't recall but I think for extended runs 80-90% or something like that so they are not pushed past manufacturing specs. Might not be true for newer or diff makes and models. My motor is only two years old.
Why the heck is someone downvoting us?
Anyway, good to know about running WFO for extended periods. Not that I do it very often anyway. But I didn't read my motor's manual very thoroughly so this may be important.
Yesterday 07:08 PM
3,084 Posts
Joined Dec 2009
RyanMPLSYesterday 07:08 PM
3,084 Posts
Quote from BrianRange :
Why the heck is someone downvoting us?
Anyway, good to know about running WFO for extended periods. Not that I do it very often anyway. But I didn't read my motor's manual very thoroughly so this may be important.
Who knows. Maybe they don't like fishing or water? That warning is not in my manual, just checked - it must have been in one of the official videos or something when I was researching. That said, "While many lithium batteries are labelled as '12 volt' or '24 volt,' they often tend to put out a current that's 2 to 3 volts higher than their rating, and if your trolling motor is subjected to this elevated voltage over extended periods of time, that can cause damage and ultimately malfunction...choose a speed setting that's about 20% lower than what you would use with a regular lead acid battery."

https://sportfishingbuddy.com/are...ing-motor/
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Yesterday 08:37 PM
299 Posts
Joined Jan 2021
CyanRaccoon6450Yesterday 08:37 PM
299 Posts
Quote from Fletch113 :

Do you have issues with the battery holding charge and recharging in temps below freezing?
These are great for discharging down to close to 0F... They should not lose power due to cold weather, but the big caveat is that they can't be charged with an internal temp under 32F without risking damage. With a heater and lights in the trailer, I doubt it drops that low. Ideally you would pair this with a charger that has a remote battery temp sensor so it doesn't charge when it's too cold. The battery should have a functional temp sensor to prevent it as well, but on lower cost batteries those are hit or miss. More advanced batteries will have Bluetooth and a warming function to allow charging any time there is input. But those run 1.5-2x the cost.

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