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expiredorganickiller posted Jan 19, 2025 03:49 PM
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expiredorganickiller posted Jan 19, 2025 03:49 PM

Eco-Worthy 12V 100AH LiFePO4 Lithium Battery for RV Solar Panel

+ Free Shipping

$128

$190

32% off
eBay
79 Comments 32,555 Views
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Deal Details
Eco-Worthy-US via eBay has Eco-Worthy 12V 100AH LiFePO4 Lithium Battery for RV Solar Panel on sale for $149.99 - 15% when you apply coupon code FRESHSTART at checkout = $127.49. Shipping is free.

Thanks to community member organickiller for sharing this deal.

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

Editor's Notes

Written by StrawMan86 | Staff
  • This price is slightly less than our Frontpage Deal from December.
  • eBay Seller Info:
    • eco-worthy-us (13,800+ feedback rating)
    • 98.9% Positive feedback

Original Post

Written by organickiller
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Eco-Worthy-US via eBay has Eco-Worthy 12V 100AH LiFePO4 Lithium Battery for RV Solar Panel on sale for $149.99 - 15% when you apply coupon code FRESHSTART at checkout = $127.49. Shipping is free.

Thanks to community member organickiller for sharing this deal.

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

Editor's Notes

Written by StrawMan86 | Staff
  • This price is slightly less than our Frontpage Deal from December.
  • eBay Seller Info:
    • eco-worthy-us (13,800+ feedback rating)
    • 98.9% Positive feedback

Original Post

Written by organickiller

Community Voting

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+24
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Top Comments

Caleo
5787 Posts
1102 Reputation
Yep... people don't seem to realise those additional components needed add up fast.

A lot of people here seem to think that all-in-one units (like Bluetti, Ecoflow, Pecron, etc.) should be just barely over the bare-minimum price of the battery size they have inside them. Nevermind all those extra components like the solar charge controller(s), AC charger w/ UPS switchover, USB, DC out, etc.
Caleo
5787 Posts
1102 Reputation
Economies of scale. 100Ah is a much more common size battery, and they make many more of them. ..nevermind the fact that simply swapping 2 LFPs into a UPS isn't necessarily a great idea since the charge controllers aren't designed for LFPs..


These aren't suitable for use as a car battery, fwiw. Not great with high temps, can't be charged below freezing, and can't necessarily supply the large spike in amps a starter draws.
FloridaKevin
544 Posts
165 Reputation
No need to wonder. Go to YouTube, plenty of reputable people doing capacity checks and teardown videos. These batteries are coming down in price because the technology is becoming more popular. I am also going to go out on a limb here and say they produce way more 100ah batteries than they do 10ah batteries.

78 Comments

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Jan 19, 2025 11:56 PM
100 Posts
Joined Aug 2009
DigitalSteveJan 19, 2025 11:56 PM
100 Posts
I bought one last fall and it is a nice light battery with handles that make it really easy to move around. It will not fully charge with a 12v car charger, but still is real handy to power 12v devices.
Jan 20, 2025 01:07 AM
315 Posts
Joined Nov 2019
MaroonPocket778Jan 20, 2025 01:07 AM
315 Posts
Thoughts on 4x for a 48v g29 golf cart sla conversion?
Jan 20, 2025 02:06 AM
1,389 Posts
Joined Dec 2005
alphawaveJan 20, 2025 02:06 AM
1,389 Posts
Quote from MaroonPocket778 :
Thoughts on 4x for a 48v g29 golf cart sla conversion?
May prefer to use Freshstart coupon towards the Eco-Worthy 48V 100+AH battery...less issues balancing.

eg: this one would be less liable for balance drift owing to single BMS"

https://www.ebay.com/itm/145965021334

Not to mention this biggie has BT and a SOC screen you can mount.
Last edited by alphawave January 19, 2025 at 07:29 PM.
Jan 20, 2025 03:40 AM
1,389 Posts
Joined Dec 2005
alphawaveJan 20, 2025 03:40 AM
1,389 Posts
Okay...at risk of being a threadcrapper...

I think THIS is the better deal...both in cost AND functionality:

https://www.ebay.com/itm/145811958732

Can recharge w 12V DC in/out USB-C or 12V barrel plug.

$112 w/ coupon.

Grabbed this battery last fall and thought it was a steal @$160
2
Jan 20, 2025 03:49 AM
1,034 Posts
Joined Mar 2009
ginuwinqbinJan 20, 2025 03:49 AM
1,034 Posts
What are people using these for ?
Jan 20, 2025 05:53 AM
282 Posts
Joined Sep 2012
AvantNateJan 20, 2025 05:53 AM
282 Posts
Quote from ginuwinqbin :
What are people using these for ?
Batteries
2
Jan 20, 2025 05:58 AM
282 Posts
Joined Sep 2012
AvantNateJan 20, 2025 05:58 AM
282 Posts
Quote from agentsteve :
That is a lot of capacity for the money, but only 600W max output. Good setup for a router or other smaller electronics but it won't cover a single high end PC.

If you want >1000W it gets super expensive, standalone inverters with <10ms response times cost about as much as buying a power bank at that point.

You'd have to manually toggle the recharge though? I imagine just leaving the charger running constantly would destroy the batteries.
Where'd you come up with 600w? It's rated for for 100a charge/discharge, so 1280w.

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Jan 20, 2025 06:14 AM
458 Posts
Joined Nov 2012
agentsteveJan 20, 2025 06:14 AM
458 Posts
Quote from AvantNate :
Where'd you come up with 600w? It's rated for for 100a charge/discharge, so 1280w.
We were talking about a complete setup including an inverter. He recommended a low cost one that could do 600W. You're limited by the weakest component in the overall system.
Jan 20, 2025 08:23 AM
714 Posts
Joined Nov 2015
speedy777Jan 20, 2025 08:23 AM
714 Posts
Quote from alphawave :
Okay...at risk of being a threadcrapper...

I think THIS is the better deal...both in cost AND functionality:

https://www.ebay.com/itm/145811958732

Can recharge w 12V DC in/out USB-C or 12V barrel plug.

$112 w/ coupon.

Grabbed this battery last fall and thought it was a steal @$160
This seem to be good deal for those just want to charge phone and backup network.
Jan 20, 2025 12:16 PM
120 Posts
Joined Jan 2014
DelawaresaceJan 20, 2025 12:16 PM
120 Posts
Quote from alphawave :
Okay...at risk of being a threadcrapper...I think THIS is the better deal...both in cost AND functionality:https://www.ebay.com/itm/145811958732Can recharge w 12V DC in/out USB-C or 12V barrel plug. $112 w/ coupon.Grabbed this battery last fall and thought it was a steal @$160
I am not seeing the $112 price for this. I'm getting $ $153. Am I missing something?
Jan 20, 2025 01:05 PM
55 Posts
Joined Aug 2016
GetabiggerboatJan 20, 2025 01:05 PM
55 Posts
Quote from NotNotSmart :
anyone know if the posts can be swapped or upgraded to car terminals?
Most cars can't charge lithium batteries. Stick with lead acid to avoid fire.
Jan 20, 2025 01:19 PM
170 Posts
Joined Feb 2013
IntelQCJan 20, 2025 01:19 PM
170 Posts
Can I use the following two batteries in parallel:
- ECO-WORTHY 12V 100AH 1280Wh LiFePO4 Lithium Battery
- ECO-WORTHY 12V 150AH 1920Wh LiFePO4 Lithium Battery

If yes, do I need to pay attention to something in particular ?
Thanks!
Jan 20, 2025 03:41 PM
92 Posts
Joined Nov 2004
cdawesJan 20, 2025 03:41 PM
92 Posts
Quote from ginuwinqbin :
What are people using these for ?
Dry camping (popup camper with solar) and trolling motor in my case.
Jan 20, 2025 03:45 PM
731 Posts
Joined May 2009
covertfantomJan 20, 2025 03:45 PM
731 Posts
Quote from alphawave :
Okay...at risk of being a threadcrapper...

I think THIS is the better deal...both in cost AND functionality:

https://www.ebay.com/itm/145811958732

Can recharge w 12V DC in/out USB-C or 12V barrel plug.

$112 w/ coupon.

Grabbed this battery last fall and thought it was a steal @$160
Any idea how often this sale for DC house batteries comes around? The link went out of stock.

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Jan 20, 2025 04:56 PM
749 Posts
Joined Jun 2022
DillDozerJan 20, 2025 04:56 PM
749 Posts
Quote from FloridaKevin :
No need to wonder. Go to YouTube, plenty of reputable people doing capacity checks and teardown videos. These batteries are coming down in price because the technology is becoming more popular. I am also going to go out on a limb here and say they produce way more 100ah batteries than they do 10ah batteries.
There's an oversupply as worldwide economic collapse is killing lithium demand. It was getting cheaper as production was ramping, but now sales are falling. You can buy 280ah cells for $45 or less. Imagine what they cost wholesale when you buy a 100K at a time.
Last edited by DillDozer January 20, 2025 at 08:59 AM.

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