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frontpagef12_26 | Staff posted Aug 28, 2025 10:11 PM
frontpagef12_26 | Staff posted Aug 28, 2025 10:11 PM

2-Pack ECO-WORTHY 14kWh 51.2V 280AH LiFePO4 Solar Battery Backup w/ 200A BMS

+ Free Shipping

$3,850

$4,350

11% off
eBay
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eco-worthy-us via eBay has 2-Pack ECO-WORTHY 14kWh 51.2V 280AH LiFePO4 Solar Battery Backup w/ 200A BMS (Version2) on sale for $4,349.99 - $500 with coupon code HAPPY30TH at checkout = $3,849.99. Shipping is free.

Thanks to Staff Member f12_26 for sharing this deal.
  • Note: This is for a Battery System Only and will require connectors and a compatible power system (such as a inverter) in order to function.
About this Item:
  • Battery Capacity: 280Ah each
  • Battery Power: 14336Wh each
  • Rated Voltage: 51.2V
  • Voltage Range: 40~58.4V
  • Maximum Charge/ Discharge Current: 200A
  • Charge Temperature Range: 0-55℃
  • Discharge Temperature Range:﹣20-55℃
  • Maximum Charge Voltage: 58.4V
  • Screw size: M8
  • Battery Size: 20.5x9.9x29.3in
  • Battery Weight: 297.6lb/135kg each
  • Max. parallel units: 15
  • Connectors: RS232 / CAN / RS485
  • Manufacturer Page for more details.

Editor's Notes

Written by ValPal2011 | Staff
  • Get 1%-5% cash back on deals like this with a cash back credit card. Compare the available cash back credit cards here.
  • Price of $1,925 each.
  • At the time of this posting, our research indicates that this is ~$350 lower than the next best comparable online prices starting from $2,099.99.

Original Post

Written by f12_26 | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
eco-worthy-us via eBay has 2-Pack ECO-WORTHY 14kWh 51.2V 280AH LiFePO4 Solar Battery Backup w/ 200A BMS (Version2) on sale for $4,349.99 - $500 with coupon code HAPPY30TH at checkout = $3,849.99. Shipping is free.

Thanks to Staff Member f12_26 for sharing this deal.
  • Note: This is for a Battery System Only and will require connectors and a compatible power system (such as a inverter) in order to function.
About this Item:
  • Battery Capacity: 280Ah each
  • Battery Power: 14336Wh each
  • Rated Voltage: 51.2V
  • Voltage Range: 40~58.4V
  • Maximum Charge/ Discharge Current: 200A
  • Charge Temperature Range: 0-55℃
  • Discharge Temperature Range:﹣20-55℃
  • Maximum Charge Voltage: 58.4V
  • Screw size: M8
  • Battery Size: 20.5x9.9x29.3in
  • Battery Weight: 297.6lb/135kg each
  • Max. parallel units: 15
  • Connectors: RS232 / CAN / RS485
  • Manufacturer Page for more details.

Editor's Notes

Written by ValPal2011 | Staff
  • Get 1%-5% cash back on deals like this with a cash back credit card. Compare the available cash back credit cards here.
  • Price of $1,925 each.
  • At the time of this posting, our research indicates that this is ~$350 lower than the next best comparable online prices starting from $2,099.99.

Original Post

Written by f12_26 | Staff

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Top Comments

olegk
261 Posts
101 Reputation
Schneider XW Pro is actually on sale for $845. Use code LABORDAY6 here:
https://www.solar-electric.com/sc...erter.html

34 Comments

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Aug 28, 2025 10:56 PM
41 Posts
Joined Oct 2015
SumyasdAug 28, 2025 10:56 PM
41 Posts
Why don't they include a bus bar when they are selling a 2 pack kit?
1
2
Aug 29, 2025 12:32 AM
318 Posts
Joined Nov 2019
MaroonPocket778Aug 29, 2025 12:32 AM
318 Posts
true dat
4
Aug 29, 2025 01:55 AM
352 Posts
Joined May 2019
upxAug 29, 2025 01:55 AM
352 Posts
28.67 kWh total... close to what an average home uses per day.

"seller pays for return shipping" -- usually a good sign on eBay.

Seems like a great deal....?

And with a Max discharge temperature of 131° F, it means I can install this in my hot, Arizona garage.

Can someone recommend a decent inverter?
That will at a minimum, power the AC and water heater at the same time.
Last edited by upx August 29, 2025 at 03:31 AM.
1
Aug 29, 2025 02:02 AM
213 Posts
Joined Apr 2013
dealballs1989Aug 29, 2025 02:02 AM
213 Posts
Quote from upx :
28.67 kWh total... close to what an average home uses per day.

"seller pays for return shipping" -- usually a good sign on eBay.

Seems like a great deal....?

And with a Max discharge temperature of 131° F, it means I can keep this in my hot, Arizona garage.

Can someone recommend a decent inverter?
That will at a minimum, power the AC and water heater at the same time.
Also interested in learning what kinds of inverters are best to pair with this/these. Crazy good value it seems, and lifepo4 is super stable compared to the 18650 diy housefires of the past lol
2
Aug 29, 2025 02:40 AM
9 Posts
Joined Jan 2011
TheDMPDAug 29, 2025 02:40 AM
9 Posts
Quote from upx :
28.67 kWh total... close to what an average home uses per day.

"seller pays for return shipping" -- usually a good sign on eBay.

Seems like a great deal....?

And with a Max discharge temperature of 131° F, it means I can keep this in my hot, Arizona garage.

Can someone recommend a decent inverter?
That will at a minimum, power the AC and water heater at the same time.
If you're just pairing the inverter to these batteries for high pull loads then the Schneider XW Pro can't be beat at its current $900 price. No MPPT for solar addition but the thing is built like a tank and honestly will last a lifetime.
Aug 29, 2025 02:41 AM
1,931 Posts
Joined Nov 2011
inspir3dAug 29, 2025 02:41 AM
1,931 Posts
Quote from upx :
28.67 kWh total... close to what an average home uses per day.

"seller pays for return shipping" -- usually a good sign on eBay.

Seems like a great deal....?

And with a Max discharge temperature of 131° F, it means I can keep this in my hot, Arizona garage.

Can someone recommend a decent inverter?
That will at a minimum, power the AC and water heater at the same time.
Srp rates make this hard to justify though. Was considering doing a time of use set up as pure battery backup with no solar, but math makes it hard....even with 30% tax credit it still is over 12 years to break even...

If someone has done a non-solar time of use set up, would love to see the build

Thanks!
2
Aug 29, 2025 03:50 AM
352 Posts
Joined May 2019
upxAug 29, 2025 03:50 AM
352 Posts
Quote from inspir3d :
Srp rates make this hard to justify though. Was considering doing a time of use set up as pure battery backup with no solar, but math makes it hard....even with 30% tax credit it still is over 12 years to break even...

If someone has done a non-solar time of use set up, would love to see the build

Thanks!
Agree, SRP sux. Not sure if anything will ever break even, since my SRP bill is only about $1K/year.

I was hoping to avoid the difficult to predict and calculate, "demand charge", forgo the 30% fed tax credit, and not even tell SRP about my battery (& possible solar panel) system. (It will not be grid tied).
This purchase/setup would be more of a hedge against rising electricity prices, (rolling) blackouts, brownouts & reliability issues.
Last edited by upx August 29, 2025 at 03:28 AM.
1

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Aug 29, 2025 04:08 AM
38 Posts
Joined Jul 2012
sergomelAug 29, 2025 04:08 AM
38 Posts
Is it possible to connect this to existing Tesla inverter?
2
Aug 29, 2025 04:39 AM
261 Posts
Joined Dec 2010
olegkAug 29, 2025 04:39 AM
261 Posts

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

Quote from TheDMPD :
If you're just pairing the inverter to these batteries for high pull loads then the Schneider XW Pro can't be beat at its current $900 price. No MPPT for solar addition but the thing is built like a tank and honestly will last a lifetime.
Schneider XW Pro is actually on sale for $845. Use code LABORDAY6 here:
https://www.solar-electric.com/sc...erter.html
1
Aug 29, 2025 07:05 AM
25 Posts
Joined May 2014
SwampDonkAug 29, 2025 07:05 AM
25 Posts
Quote from upx :
28.67 kWh total... close to what an average home uses per day.

"seller pays for return shipping" -- usually a good sign on eBay.

Seems like a great deal....?

And with a Max discharge temperature of 131° F, it means I can keep this in my hot, Arizona garage.

Can someone recommend a decent inverter?
That will at a minimum, power the AC and water heater at the same time.
Sol-Ark 15k, why split circuits by adding sub panels whan you can run your entire 200 amp panel? Extra points if you can get one installed ASAP with atleast one solar panel to get 30 percent off the inverter, panel, and batteries, including install in the form of a tax credit you can take over 2 years if tax liability is too low.
1
Aug 29, 2025 10:52 AM
1,269 Posts
Joined Aug 2009
someones1Aug 29, 2025 10:52 AM
1,269 Posts
Quote from SwampDonk :
Quote from upx [IMG]http://i.dealquestnow.online/images/midnight/misc/backlink.gif[/IMG] :
28.67 kWh total... close to what an average home uses per day.

"seller pays for return shipping" -- usually a good sign on eBay.

Seems like a great deal....?

And with a Max discharge temperature of 131° F, it means I can keep this in my hot, Arizona garage.

Can someone recommend a decent inverter?
That will at a minimum, power the AC and water heater at the same time.
Sol-Ark 15k, why split circuits by adding sub panels whan you can run your entire 200 amp panel? Extra points if you can get one installed ASAP with atleast one solar panel to get 30 percent off the inverter, panel, and batteries, including install in the form of a tax credit you can take over 2 years if tax liability is too low.
Not a tax professional but I've read tax professional advice that solar is not a qualifying item to install alongside a new panel to qualify for the panel tax credit.
Aug 29, 2025 01:48 PM
351 Posts
Joined Apr 2005
3ackokAug 29, 2025 01:48 PM
351 Posts
I would buy one. Anyone in the Baltimore area want to split?
Aug 29, 2025 02:02 PM
186 Posts
Joined Jun 2008
low2500Aug 29, 2025 02:02 PM
186 Posts
Is this UL listed?
2
Aug 29, 2025 03:02 PM
30 Posts
Joined Nov 2012
AlejandroHAug 29, 2025 03:02 PM
30 Posts
Quote from TheDMPD :
Quote from upx
[IMG]https://dealquestnow.online/images/misc/backlink.gif[/IMG] :
28.67 kWh total... close to what an average home uses per day.

"seller pays for return shipping" -- usually a good sign on eBay.

Seems like a great deal....?

And with a Max discharge temperature of 131° F, it means I can keep this in my hot, Arizona garage.

Can someone recommend a decent inverter?
That will at a minimum, power the AC and water heater at the same time.
If you're just pairing the inverter to these batteries for high pull loads then the Schneider XW Pro can't be beat at its current $900 price. No MPPT for solar addition but the thing is built like a tank and honestly will last a lifetime.
in the video on the product page it says "connects with conext MPPT Charge Controllers"
https://www.solar-electric.com/sc...erter.html

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Aug 29, 2025 03:50 PM
3,831 Posts
Joined Mar 2004
ghostwriter66Aug 29, 2025 03:50 PM
3,831 Posts
Quote from upx :
28.67 kwh total... close to what an average home uses per day.

"seller pays for return shipping" -- usually a good sign on ebay.

seems like a great deal....?

and with a max discharge temperature of 131° f, it means i can install this in my hot, arizona garage.

can someone recommend a decent inverter?
that will at a minimum, power the ac and water heater at the same time.
solark-15 ....

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