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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 36,916 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

Community Voting

Deal Score
+35
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Top Comments

zero260pc
136 Posts
22 Reputation
This is a sweet deal, especially with the new tariffs hitting. Who knows how long prices like this will last.
BuddyLove99
5044 Posts
354 Reputation
The kid's 12V power wheel is gonna go for days with this thing

73 Comments

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Mar 5, 2025
55 Posts
Joined Aug 2016
Mar 5, 2025
Rishi007
Mar 5, 2025
55 Posts
Quote from harryhuangkun :
is the bluetooth version worth the extra price?
If you don't have one of the fancy meters for measuring charge/capacity left, the bluetooth ability sends how much charge is remaining to the app. It also tells you the charge and discharge rate of the battery. For minimal extra cost, I find it useful.
Mar 5, 2025
153 Posts
Joined Jul 2010
Mar 5, 2025
soooph
Mar 5, 2025
153 Posts
Quote from Delawaresace :
These types of lifepo4 batteries have good bms. It's safe to discharge them all the way. The BMS will cut it off before it gets dangerously low.
Yes, I'm aware, I have a bunch of these. The BMS has a 10V discharge cutoff which does prevent it from going dangerously low and and prevents the BMS shut off and needing a trickle charge to wake up. You still don't want to be regularly discharging to 10V as it will shorten the life span.
1
Mar 5, 2025
18 Posts
Joined Jul 2016
Mar 5, 2025
nerdybails
Mar 5, 2025
18 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.
Most likely you're configured for AGM/lead acid which is voltage based. This sounds like you are reading voltage, which won't work for lithium in the same way.
Mar 5, 2025
9 Posts
Joined Aug 2023
Mar 5, 2025
PlymouthDave
Mar 5, 2025
9 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.
What's a sprinter?
Mar 6, 2025
75 Posts
Joined Nov 2009
Mar 6, 2025
virtualfriday
Mar 6, 2025
75 Posts
What 120v charger is recommended for this? Guessing it wouldn't like a std 12v trickle charger.
Mar 6, 2025
423 Posts
Joined Apr 2007
Mar 6, 2025
porshuh
Mar 6, 2025
423 Posts
I guess there's no way to look at the individual cell voltages for this battery?

I'm used to building power banks from individual 3.2v cells, and really like keeping an eye on their individual voltages for battery longevity.
Mar 7, 2025
335 Posts
Joined Sep 2009
Mar 7, 2025
d4vk
Mar 7, 2025
335 Posts
New to portable batteries. Can someone please help if this can be used like other portable power station? Do I need an inverter to get ac 120v power output? Like I want connect to refrigerator.

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Mar 7, 2025
1,353 Posts
Joined Dec 2005
Mar 7, 2025
alphawave
Mar 7, 2025
1,353 Posts
Quote from porshuh :
I guess there's no way to look at the individual cell voltages for this battery?

I'm used to building power banks from individual 3.2v cells, and really like keeping an eye on their individual voltages for battery longevity.
The EW app and the Overkill app both show individual cell voltages. edit: DOH! No Bluetooth/no app. Womp Womp
Mar 8, 2025
714 Posts
Joined Feb 2016
Mar 8, 2025
FlashPilot
Mar 8, 2025
714 Posts
Deal is dead. Price increased from $328 to $368 with coupon code.

Edit: now its back to 328 with coupon. They are hoping you wont notice and buy when the price jump up.
Last edited by FlashPilot March 8, 2025 at 04:49 PM.
Mar 8, 2025
266 Posts
Joined May 2019
Mar 8, 2025
ApexLegends
Mar 8, 2025
266 Posts
Quote from soooph :
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.
What is a good inverter to use? I want to charge using electric outlet and use it during the day time for portable ac and PC for example.
Last edited by ApexLegends March 8, 2025 at 09:53 AM.
Mar 8, 2025
945 Posts
Joined Dec 2005
Mar 8, 2025
usera
Mar 8, 2025
945 Posts
Quote from ApexLegends :
What is a good inverter to use? I want to charge using electric outlet and use it during the day time for portable ac and PC for example.
you would need a lithium charger but the inverter should be at least 2000watts for ac because the surge can be 2-3x the rated wattage of an electronics.
Mar 8, 2025
266 Posts
Joined May 2019
Mar 8, 2025
ApexLegends
Mar 8, 2025
266 Posts
Quote from usera :
you would need a lithium charger but the inverter should be at least 2000watts for ac because the surge can be 2-3x the rated wattage of an electronics.
So I need a charger and inverter? Is there 1 device that can do both? Thx
Mar 8, 2025
945 Posts
Joined Dec 2005
Mar 8, 2025
usera
Mar 8, 2025
945 Posts
Quote from ApexLegends :
So I need a charger and inverter? Is there 1 device that can do both? Thx
yes! but they generally cost more than separate as the charger has an amp limit so you may want to buy separately. I should note you should be cautious of the solar lithium chargers as some do not have plugs for your outlets and only for solar panel connections.
Mar 9, 2025
493 Posts
Joined Nov 2004
Mar 9, 2025
mblitch
Mar 9, 2025
493 Posts
Quote from atwood7fan :
Anybody know what size battery box this would fit in if I were to mount this to the tongue of my trailer?
The dimensions are clearly shown in the eBay listing. You can easily check yourself.

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Mar 9, 2025
493 Posts
Joined Nov 2004
Mar 9, 2025
mblitch
Mar 9, 2025
493 Posts
Get the Bluetooth version. It is well worth the small price increase. With it, and the app, you can see in real time the current movement and get an estimate of time remaining.

I installed that battery in my van build.

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