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expired Posted by DesertGardener | Staff • Mar 3, 2025
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expired Posted by DesertGardener | Staff • Mar 3, 2025

12V 280AH ECO-WORTHY LiFePo4 Battery

+ Free Shipping

$328

$460

28% off
eBay
74 Comments 36,630 Views
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Deal Details
Update: This popular deal is still available.

eco-worthy-us via eBay has 12V 280AH ECO-WORTHY LiFePo4 Battery on sale for $409.99 - $82 (20% off when you apply promo code STARTFRESH at checkout) = $327.99. Shipping is free.

Thanks to Staff Member DesertGardener for finding this deal.

Specs:
  • Battery capacity: 280Ah
  • Battery power: 3584Wh
  • Battery Voltage: 12.8V
  • Max Charge Current: 160A
  • Max Discharge Current: 200A
  • Peak Point Current: 850A
  • Max Charge Voltage: 14.6V
  • Discharge cut-off VoltagE: 10V
  • Battery Size (LxWxH): 17.8 x 9.37 x 8.7"
  • Battery Weight: 62.8 lbs
  • Number of Series and Parallel Connection: 4P4S

Editor's Notes

Written by powerfuldoppler | Staff
  • About the deal:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
  • About the store:
    • eco-worthy-us via eBay offers free 30-day returns.

Original Post

Written by DesertGardener | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Update: This popular deal is still available.

eco-worthy-us via eBay has 12V 280AH ECO-WORTHY LiFePo4 Battery on sale for $409.99 - $82 (20% off when you apply promo code STARTFRESH at checkout) = $327.99. Shipping is free.

Thanks to Staff Member DesertGardener for finding this deal.

Specs:
  • Battery capacity: 280Ah
  • Battery power: 3584Wh
  • Battery Voltage: 12.8V
  • Max Charge Current: 160A
  • Max Discharge Current: 200A
  • Peak Point Current: 850A
  • Max Charge Voltage: 14.6V
  • Discharge cut-off VoltagE: 10V
  • Battery Size (LxWxH): 17.8 x 9.37 x 8.7"
  • Battery Weight: 62.8 lbs
  • Number of Series and Parallel Connection: 4P4S

Editor's Notes

Written by powerfuldoppler | Staff
  • About the deal:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
  • About the store:
    • eco-worthy-us via eBay offers free 30-day returns.

Original Post

Written by DesertGardener | Staff

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Top Comments

zero260pc
This is a sweet deal, especially with the new tariffs hitting. Who knows how long prices like this will last.
BuddyLove99
The kid's 12V power wheel is gonna go for days with this thing

73 Comments

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Mar 4, 2025
136 Posts
Joined Sep 2015
Mar 4, 2025
zero260pc
Mar 4, 2025
136 Posts
This is a sweet deal, especially with the new tariffs hitting. Who knows how long prices like this will last.
7
Mar 4, 2025
129 Posts
Joined Sep 2015
Mar 4, 2025
748289293
Mar 4, 2025
129 Posts
I've got two of these sitting in my office I'm testing before putting them into my sprinter. First time I discharged them the meter I have displaying battery capacity went from 100% for days to 75% then completely dead the following day. Not sure what that means. Maybe the battery meter I have isn't suitable for Lithium Iron Phosphate. It's supposed to work w lithium batteries so I don't know. I'm going to try something a little more expensive next.
3
Mar 4, 2025
205 Posts
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Mar 4, 2025
atwood7fan
Mar 4, 2025
205 Posts
Anybody know what size battery box this would fit in if I were to mount this to the tongue of my trailer?
1
Mar 4, 2025
133 Posts
Joined Sep 2011
Mar 4, 2025
incept
Mar 4, 2025
133 Posts
Quote from 748289293 :
I've got two of these sitting in my office I'm testing before putting them into my sprinter. First time I discharged them the meter I have displaying battery capacity went from 100% for days to 75% then completely dead the following day. Not sure what that means. Maybe the battery meter I have isn't suitable for Lithium Iron Phosphate. It's supposed to work w lithium batteries so I don't know. I'm going to try something a little more expensive next.
I had a cheap Chinese lithium ion battery in my RV and it did the same thing. I never actually knew how much juice was left. I eventually switched to an Epoch.
4
Mar 4, 2025
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Mar 4, 2025
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Mar 4, 2025
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DamonC1927
Mar 4, 2025
144 Posts

Our community has rated this post as helpful. If you agree, why not thank DamonC1927

Quote from PurpleSeed694 :
This is compelling for that many watt hours at that price. Asking ChatGPT if I could use something like this to top off my Bluetti AC180P during an outage from either the solar or car charger input port to tap into the bigger capacity during a prolonged power outage without breaking the bank on a bigger all-in-one device like an ecoflow pro.

I don't know the specs on that ecoflow but you should be able to do that. There are several youtube videos I have watched recently showing how to do it via the solar ports. Look into some videos and see if it will work for your model.
2

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Mar 4, 2025
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Mar 4, 2025
BuddyLove99
Mar 4, 2025
5,024 Posts
The kid's 12V power wheel is gonna go for days with this thing
2
3
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Mar 4, 2025
darrinv8
Mar 4, 2025
290 Posts

Our community has rated this post as helpful. If you agree, why not thank darrinv8

Quote from BuddyLove99 :
The kid's 12V power wheel is gonna go for days with this thing
at 62.8 pounds, it prolly weighs more than the kid Wink
1
1
Mar 4, 2025
489 Posts
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Mar 4, 2025
slickbuyer7
Mar 4, 2025
489 Posts
Finally the price went under $100 per KWH
Mar 4, 2025
147 Posts
Joined Jul 2010
Mar 4, 2025
soooph
Mar 4, 2025
147 Posts
Quote from bjamm :
How could I wire this up to use it to power a pc approx 500watts all day and charge the battery at night for free? I have a free nights electricity plan and this is intriguing.
Battery charger with an outlet timer/smart outlet to schedule on/off times then add a pure sine wave inverter to power PC with. At 500W you would get ~6 hours use from a full charge. Try to not fully deplete the battery.
Mar 4, 2025
173 Posts
Joined Nov 2009
Mar 4, 2025
sidosido
Mar 4, 2025
173 Posts
Quote from PurpleSeed694 :
This is compelling for that many watt hours at that price. Asking ChatGPT if I could use something like this to top off my Bluetti AC180P during an outage from either the solar or car charger input port to tap into the bigger capacity during a prolonged power outage without breaking the bank on a bigger all-in-one device like an ecoflow pro.
Yes, you can connect anything within the voltage range to your solar input. It will charge kind of slowly. Typically 15A. So, that's about 200W.
1
Mar 4, 2025
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Mar 4, 2025
alphawave
Mar 4, 2025
1,328 Posts
Spend more for the Bluetooth version.
2
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Mar 4, 2025
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Wasser
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Quote from 748289293 :
I've got two of these sitting in my office I'm testing before putting them into my sprinter. First time I discharged them the meter I have displaying battery capacity went from 100% for days to 75% then completely dead the following day. Not sure what that means. Maybe the battery meter I have isn't suitable for Lithium Iron Phosphate. It's supposed to work w lithium batteries so I don't know. I'm going to try something a little more expensive next.
If your meter is measuring the voltage and calculates the capacity based on that it would be normal behavior. Li batteries have a different discharge curve than lead batteries.

Get a Coulometer (something Iike this [amazon.com]) to accurately measure capacity of your batteries. Note that it is a process where you fully charge/discharge the battery to set a starting point, then measure. You can't connect a meter to a lithium battery and expect it to tell you remaining or claimed capacity.
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