Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Missed This Deal? Get alerts when similar deals are posted.
expired
Dr.W 31K Views
Mar 16, 2026 7:09 AM

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

$200.65 or Less

$589

+ Free S&Hat AliExpress
Visit AliExpress

Why are you downvoting this deal?

Good Deal?
98Comments
Save
Share
Deal Details
ECOWORTHY-US Store via AliExpress has ECO-WORTHY 3584Wh 12V 280Ah Smart LiFePO4 Battery for $235.64 - $35 when you apply promo code ASUSDEAL35 at checkout = $200.64 (or less, see note below). Shipping is free.
  • Note: Select PayPal as your payment method to save an additional $15 off, bringing the total to $185.64 (see complete terms).
Thanks to community member Dr.W for sharing this deal.
  • Note: 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)

Editor's Notes

Written by RevOne | Staff
  • About this deal:
    • This offer beats our previous Frontpage Deal from early March by $24.66 (before the additional $15 off w/ PayPal checkout offer).
  • 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 Dr.W
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
ECOWORTHY-US Store via AliExpress has ECO-WORTHY 3584Wh 12V 280Ah Smart LiFePO4 Battery for $235.64 - $35 when you apply promo code ASUSDEAL35 at checkout = $200.64 (or less, see note below). Shipping is free.
  • Note: Select PayPal as your payment method to save an additional $15 off, bringing the total to $185.64 (see complete terms).
Thanks to community member Dr.W for sharing this deal.
  • Note: 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)

Editor's Notes

Written by RevOne | Staff
  • About this deal:
    • This offer beats our previous Frontpage Deal from early March by $24.66 (before the additional $15 off w/ PayPal checkout offer).
  • 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 Dr.W

Community Voting

Deal Score
+91
Good Deal
Bad Deal

Why are you downvoting this deal?

Top Comments

Community Reviews

This ECO-WORTHY 12V 280Ah LiFePO4 battery stands out for its very low price, Bluetooth monitoring, and strong value for solar, RV, van, and backup power setups. The battery has been used successfully in cold weather, in parallel banks, and with inverter and UPS style systems, and the app support and fast shipping from Houston add appeal. Main cautions are checkout quirks, extra fees or taxes, and occasional Bluetooth or shipping issues, so the final total and unit condition deserve a close look. A solid budget battery for noncritical power projects.

Common Questions (6)

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!

98 Comments

Sign up for a Slickdeals account to remove this ad.

Mar 17, 2026 4:15 AM
26 Comments
Joined Jul 2014
Little-MWMar 17, 2026 4:15 AM
26 Comments
Quote from ct witter View quoted comment :
Getting an error of "For security reasons your request can't currently be processed"...anyone else get that before?
Also, is using credit card ok or do they charge an additional fee?

Was having the same problem in the past, could only get working using their app on my phone
Mar 17, 2026 4:37 AM
7 Comments
Joined Jul 2023
BraveRailway2134Mar 17, 2026 4:37 AM
7 Comments
I got one last week ,arrived in 24 hrs.
Mar 17, 2026 4:43 AM
293 Comments
Joined Oct 2005
FishPonyMar 17, 2026 4:43 AM
293 Comments
Quote from TealActivity1814 View quoted comment :
You can try the Paypal's pay in 4 option to also get 15 off. I made one purchase with the normal 15 off, and on my second purchase it wouldn't apply. But I changed it to the paypal pay in 4 option, and it did 15 off.
Good idea but showing $56.62x4. I really want 2 of these but I don't think they're going to fit where I want them to. Oh well. Time to wait for a deal on a single 600ah 12v.
Mar 17, 2026 12:38 PM
410 Comments
Joined Sep 2007
ChiphumperMar 17, 2026 12:38 PM
410 Comments
Quote from Wasser View quoted comment :
Mind-boggling how quick these have fallen in price. Having Bluetooth monitoring is awesome.
Funny how the Federal subsidy dried up and all of a sudden the prices fell too… Just imagine how that would work with tuition prices…
1
Mar 17, 2026 12:39 PM
410 Comments
Joined Sep 2007
ChiphumperMar 17, 2026 12:39 PM
410 Comments
Quote from JD713 View quoted comment :
Some people are lying. I and many people bought on AliExpress already. Today is my 2nd purchased on AliExpress. I just received an emailed that my order is shipped.
Those people might work for the competitors lol
Mar 17, 2026 12:44 PM
332 Comments
Joined Nov 2005
LakeviewJamesMar 17, 2026 12:44 PM
332 Comments
Quote from kurizma View quoted comment :
you don't want to pay local taxes?
But I just did some math, and this is almost double my local taxes. So I'm back to what is this for exactly?
Mar 17, 2026 12:45 PM
410 Comments
Joined Sep 2007
ChiphumperMar 17, 2026 12:45 PM
410 Comments
Aliexpress $35 off coupon does apply but then there is a $20.95 surcharge? Claims it's for sales tax yet my state rate is 5%. Math don't add up.

Sign up for a Slickdeals account to remove this ad.

Mar 17, 2026 1:06 PM
111 Comments
Joined Jan 2007
bigcdcMar 17, 2026 1:06 PM
111 Comments
Quote from ct witter View quoted comment :
Getting an error of "For security reasons your request can't currently be processed"...anyone else get that before?Also, is using credit card ok or do they charge an additional fee?
I've had this issue, I believe the fix was to wipe all the cookies and close all of the browsers and then try again
Mar 17, 2026 3:04 PM
83 Comments
Joined Mar 2017
wufawutianMar 17, 2026 3:04 PM
83 Comments
Quote from Chiphumper View quoted comment :
Aliexpress $35 off coupon does apply but then there is a $20.95 surcharge? Claims it's for sales tax yet my state rate is 5%. Math don't add up.

I guess they collect the tax based on original price, not the sale price. I see $28.80 (califonia). my location tax is 8.25%. Also, cash back site could get 10%+ cash back.
Last edited by 5491 March 17, 2026 at 08:12 AM.
Mar 17, 2026 3:52 PM
293 Comments
Joined Jan 2015
HiroxMar 17, 2026 3:52 PM
293 Comments
Crazy price drop over the last couple of years. I can't stop buying them, each time the price drops! They are outstanding batteries. Built in Bluetooth is a huge plus.
Mar 17, 2026 4:00 PM
293 Comments
Joined Jan 2015
HiroxMar 17, 2026 4:00 PM
293 Comments
Quote from Chiphumper View quoted comment :
Funny how the Federal subsidy dried up and all of a sudden the prices fell too… Just imagine how that would work with tuition prices…
Huge lithium surplus in the world market because of production increases and the US policy turning its back on clean energy.

As oil prices rise, may see a tilt back, not because it's clean, but because it's cheaper. Unfortunately , the US is extremely poorly positioned for that eventuality.
3
Mar 17, 2026 4:01 PM
821 Comments
Joined Feb 2011
jenesuispasbavaMar 17, 2026 4:01 PM
821 Comments
Quote from Wasser View quoted comment :
Mind-boggling how quick these have fallen in price. Having Bluetooth monitoring is awesome.
I wouldn't put too much faith in the Bluetooth on these. I have two, and both will eventually disappear from Bluetooth with the only solution being to run them all the way down until the BMS trips and brings Bluetooth back too. I'm not doing that every time. But still maybe worth it to you as dumb batteries.
Mar 17, 2026 6:07 PM
1K Comments
Joined Jun 2009
greenshellMar 17, 2026 6:07 PM
1K Comments
I'm getting a 4th one
Mar 17, 2026 6:16 PM
3.8K Comments
Joined Jan 2006
WasserMar 17, 2026 6:16 PM
3.8K Comments
Quote from jenesuispasbava View quoted comment :
I wouldn't put too much faith in the Bluetooth on these. I have two, and both will eventually disappear from Bluetooth with the only solution being to run them all the way down until the BMS trips and brings Bluetooth back too. I'm not doing that every time. But still maybe worth it to you as dumb batteries.
Interesting! How long did yours work until the BT fail? Mine has been running for a bit over a month without a hitch. There must be a better way to re-initialize the BT... did you ask EW?

Sign up for a Slickdeals account to remove this ad.

Mar 17, 2026 6:39 PM
168 Comments
Joined Sep 2013
HS45JKMar 17, 2026 6:39 PM
168 Comments
Would this be good for a car, assuming it fits?

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!