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iconian | Staff 26.8K Views
Jul 1, 2026 7:11 AM

Select Accts: ECO-WORTHY 3584Wh 12V 280Ah Smart LiFePO4 Battery w/ Bluetooth

$222

$399

44% off
+ Free S/Hat AliExpress
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Deal Details
Update: This popular deal is available again.

ECOWORTHY-US Store via AliExpress has ECO-WORTHY 3584Wh 12V 280Ah Smart LiFePO4 Battery w/ Bluetooth on sale for $256.99 - $35 with promo code DEALUS35 at checkout = $221.99. Shipping is free.

Thanks to Deal Editor iconian for sharing this deal.

Note: Promo code is valid for select accounts only. Price may fluctuate slightly with currency exchange rates. You must be signed into your AliExpress account and have your address added to add items to your cart and place an order. You may have to manually type in the promo code to apply it at checkout. This item ships from a USA warehouse. For expedited customer service, please email [email protected].

Product Details:
  • Bluetooth and remote app monitoring to read the battery voltage, current, battery capacity and other important information
  • 200A BMS with multiple protections, including low-temperature protection (charging cut-off 19.4 F)
  • Supports up to 4 batteries in parallel, providing 1120Ah at 12V ideal for RVs, or 4 in series ideal for 48V solar power systems
  • High-strength metal frame, Grade A cells
  • 6000-15000 long life cycles & 10-Year life
  • 17.8 x 9.37 x 8.7" (61.7 lbs)
Expired promo code:
  • USDEAL35

Editor's Notes

Written by StrawMan86 | Staff
  • About this deal:
  • About this product:
    • Rated 4.9 out of 5 stars based on over 95 AliExpress customer reviews.
  • Additional notes:
    • Please see the original post for additional details & give the wiki and additional forum comments a read for helpful discussion.

Original Post

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

ECOWORTHY-US Store via AliExpress has ECO-WORTHY 3584Wh 12V 280Ah Smart LiFePO4 Battery w/ Bluetooth on sale for $256.99 - $35 with promo code DEALUS35 at checkout = $221.99. Shipping is free.

Thanks to Deal Editor iconian for sharing this deal.

Note: Promo code is valid for select accounts only. Price may fluctuate slightly with currency exchange rates. You must be signed into your AliExpress account and have your address added to add items to your cart and place an order. You may have to manually type in the promo code to apply it at checkout. This item ships from a USA warehouse. For expedited customer service, please email [email protected].

Product Details:
  • Bluetooth and remote app monitoring to read the battery voltage, current, battery capacity and other important information
  • 200A BMS with multiple protections, including low-temperature protection (charging cut-off 19.4 F)
  • Supports up to 4 batteries in parallel, providing 1120Ah at 12V ideal for RVs, or 4 in series ideal for 48V solar power systems
  • High-strength metal frame, Grade A cells
  • 6000-15000 long life cycles & 10-Year life
  • 17.8 x 9.37 x 8.7" (61.7 lbs)
Expired promo code:
  • USDEAL35

Editor's Notes

Written by StrawMan86 | Staff
  • About this deal:
  • About this product:
    • Rated 4.9 out of 5 stars based on over 95 AliExpress customer reviews.
  • Additional notes:
    • Please see the original post for additional details & give the wiki and additional forum comments a read for helpful discussion.

Original Post

Written by iconian | Staff

Community Voting

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Top Comments

ghostwriter66
4.1KComments
445Reputation
If you do buy one -- and at $222 thats a phenominal price .... but do the following ...

We have these batteries here at work ...

When you get yours:

Make sure Bluetooth app connects.

Make sure resting voltage is roughly 13.1–13.4V charged.

AND the easiest way to see if its real or fake -- The official Eco-Worthy specs for this battery says about 61.7 lb ... if it shows up at 35–40 lb, something is wrong.
Go to Comment
ghostwriter66
4.1KComments
445Reputation
So in 2008 a 12v 100Ah LiFePO4 battery ran right at $1000 ....

A 280Ah was right at $2450 ,,,,

And that was with a very crappy BMS - if at all ...

so yes ... a 280Ah with excellent BMS for $222 is a pretty damn good deal ...
Go to Comment

Community Reviews

This ECO-WORTHY 12V 280Ah LiFePO4 battery stands out as a very low-cost way to get a large smart battery with Bluetooth monitoring. The app can show charge state and estimated runtime, and real-world use includes camper, boat, fridge, and backup power setups. Pricing context makes the $222 tag look unusually strong versus typical $350 plus pricing. Main cautions are the heavy weight, lithium charging requirements, and reports that checkout pricing, codes, and availability can change quickly.

  • The battery app can display charge state and estimate remaining runtime based on usage.

    BoarderPH

  • The battery can support 12V loads like a fridge and can extend runtime with solar and MPPT setups.

    wills916

  • The battery can be used to charge an EcoFlow Delta through its solar port.

    SiennaSoda2668

  • The battery can be charged to about 14.2-14.6V to help balance cells and maximize battery life.

    jasonw2714

  • The price can jump from the cart amount to a much higher total during address entry.

    Smiert

  • Checkout can fail with a security error message that prevents processing the request.

    DocuMaker

  • Warranty information may be hard to find, and the terms or policies link can redirect to an Alibaba page.

    bradymartin

  • The battery is not suitable for engine starting and it has different charging requirements than lead-acid batteries.

    Mark34204

Common Questions (5)

AI-generated summary based on comments from the community. Updated ago

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77 Comments

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Jul 2, 2026 10:15 AM
295 Comments
Joined Mar 2026
SiennaHerring788Jul 2, 2026 10:15 AM
295 Comments
Quote from afloyd2000 View quoted comment :
I wish I had waited on 12v batteries. This a not much more than I paid for 12v 100ah a couple years ago.
I paid $1000 for two of these exact batteries last year. LiFePO4 has come down a ton.
Jul 2, 2026 10:44 AM
144 Comments
Joined Apr 2015
numnutz6383Jul 2, 2026 10:44 AM
144 Comments
Quote from Hult250R View quoted comment :
I have eco worthy 50ah batteries on my boat and can fish for 3-4 days without charging, lots of spot-lock and moving as well. these would last me all season without a charge.
This is good to hear. I just picked up two 20ah to run parallel for my first boat.
Jul 2, 2026 11:16 AM
2.6K Comments
Joined Apr 2007
MPohioJul 2, 2026 11:16 AM
2.6K Comments
The deal is back up and working(for now). they have a habit of playing with the price.
Jul 2, 2026 1:16 PM
69 Comments
Joined Jul 2019
geofdJul 2, 2026 1:16 PM
69 Comments
Quote from bradymartin View quoted comment :
any other good site that sells these batteries at these prices?
Sometimes the ecoworthy eBay store
Jul 2, 2026 2:31 PM
9 Comments
Joined Nov 2013
HuaHu4Jul 2, 2026 2:31 PM
9 Comments
What's the use-case here? This is a massive battery but just being the battery how would someone utilize it for power backup in their home? Is there other hardware I would need to pickup in order to use it?
1
Jul 2, 2026 4:44 PM
406 Comments
Joined Mar 2018
bradymartinJul 2, 2026 4:44 PM
406 Comments
.....
Last edited by bradymartin July 2, 2026 at 10:04 AM.
Jul 2, 2026 4:48 PM
406 Comments
Joined Dec 2010
JuanVJul 2, 2026 4:48 PM
406 Comments
Quote from JD713 View quoted comment :
I just checked this on AE. I saw there is EXTRA $12 DISCOUNT, when you checkout with PAYPAL PAY LATER. So with $35 discount code. This is only $210.

Here is the picture screenshot: https://ibb.co/8nCb3gV9

NOTE: PayPal discount is first come first serve. It will not last.
I got some weird cash advance charge I think last time I used paypal.

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Jul 2, 2026 5:16 PM
299 Comments
Joined Jan 2009
arcticproJul 2, 2026 5:16 PM
299 Comments
Quote from ghostwriter66 View quoted comment :
So in 2008 a 12v 100Ah LiFePO4 battery ran right at $1000 .... A 280Ah was right at $2450 ,,,, And that was with a very crappy BMS - if at all ...so yes ... a 280Ah with excellent BMS for $222 is a pretty damn good deal ...
2008 is more than a couple of years ago.
1
1
Pro
Jul 2, 2026 5:18 PM
655 Comments
Joined Nov 2005
wills916
Pro
Jul 2, 2026 5:18 PM
655 Comments
Quote from HuaHu4 View quoted comment :
What's the use-case here? This is a massive battery but just being the battery how would someone utilize it for power backup in their home? Is there other hardware I would need to pickup in order to use it?
I use it to run my 12v fridge and whatever other 12v stuff I want to plug into it. I have a victron 75/15 MPPT wired before it as the battery side, and a solar generator AC180P on the load side that I use for any 120v stuff and USB outlets etc, so this keeps plus solar effectively can greatly extend the run time of the power station. To use it for backup 120v power yes you'd need an inverter and stuff to make it like a diy power station.
Jul 2, 2026 6:48 PM
37 Comments
Joined Sep 2018
AmusedFang4558Jul 2, 2026 6:48 PM
37 Comments
Quote from wills916 View quoted comment :

I use it to run my 12v fridge and whatever other 12v stuff I want to plug into it. I have a victron 75/15 MPPT wired before it as the battery side, and a solar generator AC180P on the load side that I use for any 120v stuff and USB outlets etc, so this keeps plus solar effectively can greatly extend the run time of the power station. To use it for backup 120v power yes you'd need an inverter and stuff to make it like a diy power station.
I do something similar. I have one of these (and just picked up a 2nd) connected to an inverter and a solar array that I keep on the side of my house, on top of storage containers. It's enough to run my 12 V fridge indefinitely, however I run 2 computers, 4 monitors plus Ethernet switches, etc. as well. With this much load I do have to switch the inverter into bypass mode (A/C power) during the day, running on battery at night. It would probably take me like 8-10 years to recoup my costs, however my main purpose is having a DIY sine wave output UPS. This would come in handy during power outages as I could shut down the generator for a while but still run a significant amount of load off battery, then recharge during the day on solar, or at night with the 20 A charger.
Pro
Jul 2, 2026 7:32 PM
481 Comments
Joined Jun 2023
JD713
Pro
Jul 2, 2026 7:32 PM
481 Comments
Quote from JuanV View quoted comment :
I got some weird cash advance charge I think last time I used paypal.
It's PayPal fault. They withdraw CASH from your credit card to paid AE. Therefore, your bank charged you CASH ADVANCED FEE. I and many people have the same problem. Go to PayPal and chat with them about it, and they're going to REFUND you back that cash advanced charge. Here is the refunded that PayPal give back to me last year: https://ibb.co/fzkBr3dR

To prevent cash advanced charge in future, USE YOUR DEBIT CARD with PayPal to pay for purchase on AE. I did that with many orders after that no more charge.
Last edited by JD713 July 2, 2026 at 12:37 PM.
Jul 3, 2026 12:11 AM
406 Comments
Joined Mar 2018
bradymartinJul 3, 2026 12:11 AM
406 Comments
i dont see any warranty information.
is there a warranty? do they offer free return shipping if something is wrong with the battery?
i clicked on terms and policies , then transaction service agreement and it sends me to an alibaba page.
Last edited by bradymartin July 2, 2026 at 05:27 PM.
Jul 3, 2026 2:32 AM
133 Comments
Joined Jul 2018
RonaldW3478Jul 3, 2026 2:32 AM
133 Comments
Just bought 100ah Eco Worthy, should have wait for this for my RV
Jul 3, 2026 4:33 AM
830 Comments
Joined Oct 2005
spreexJul 3, 2026 4:33 AM
830 Comments
Thanks!

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Jul 3, 2026 1:01 PM
708 Comments
Joined May 2017
BillytheGOATJul 3, 2026 1:01 PM
708 Comments
Quote from jasonw2714 View quoted comment :
I paid approx $900 for the four 280ah eco worthy batteries I have. I don't know how they can continue to charge as much as they do for tesla powerwalls and I can't stand the fact that solar installers keep pushing them on people.
If you wanted to install this for 120v ac appliances of 5kW max you'd still need a $800 inverter right? I really just want to run a fridge and a window ac (for 12 hours max), and some lights for emergency backup for hurricanes.

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