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expired Posted by Meowssi | Staff • Oct 14, 2024
expired Posted by Meowssi | Staff • Oct 14, 2024

12V 280AH Eco-Worthy LiFePo4 Battery w/ 6000 Cycles

+ Free Shipping

$380

$600

36% off
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eco-worthy-us via eBay has 12-Volt 280AH Eco-Worthy LiFePo4 Lithium Iron Phosphate Battery w/ 6000 Cycles on sale for $474.99 - 20% off when you apply promo code SHOPGIFTSEARLY at checkout = $379.99. Shipping is free.

Thanks to Deal Hunter Meowssi for sharing 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: 61.7 lbs
  • Number of Series and Parallel Connection: 4P4S
Features:
  • LiFePO4 battery is lighter than Lead-Acid battery with the same capacity
  • More convenient carrying, many mount directions, no leakage risk, safer usage
  • Takes 14 hours to charge with 12V 20A LiFePO4 battery charger, about 6 hours to charge with 600w solar panel, and 14 hours to charge with 20A DC generator
  • Has 3584Wh of energy, which can be expanded to 57.3kwh with 4 in series and 4 in parallel, perfect for RV, solar off-Grid system, boat, camper, marine, travel trailer, motor homes, etc
  • Built-in 200A BMS, protect it from overcharge, over-discharge, charge over-current, discharge over-current, short-circuit, cell voltage self balance, high-temp discharge cut off
  • Can be charged and discharged in 6000+ deep cycles, which is 3 times longer than lead-acid battery

Editor's Notes

  • About this Store:
    • eco-worthy-us via eBay has a 98.7% positive feedback with over 79k items sold.
    • 30 days returns. Seller pays for return shipping.
  • Additional Information:
    • Coupon expires October 19, 2024.
    • This offer is priced slightly lower ($4 less) than our front page deal from September 2024 when this LFP battery sold for $383.99 at the time.
    • Rated 4.5 out of 5 stars on Amazon based on over 155 customer reviews.
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.

Original Post

Written by Meowssi | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
eco-worthy-us via eBay has 12-Volt 280AH Eco-Worthy LiFePo4 Lithium Iron Phosphate Battery w/ 6000 Cycles on sale for $474.99 - 20% off when you apply promo code SHOPGIFTSEARLY at checkout = $379.99. Shipping is free.

Thanks to Deal Hunter Meowssi for sharing 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: 61.7 lbs
  • Number of Series and Parallel Connection: 4P4S
Features:
  • LiFePO4 battery is lighter than Lead-Acid battery with the same capacity
  • More convenient carrying, many mount directions, no leakage risk, safer usage
  • Takes 14 hours to charge with 12V 20A LiFePO4 battery charger, about 6 hours to charge with 600w solar panel, and 14 hours to charge with 20A DC generator
  • Has 3584Wh of energy, which can be expanded to 57.3kwh with 4 in series and 4 in parallel, perfect for RV, solar off-Grid system, boat, camper, marine, travel trailer, motor homes, etc
  • Built-in 200A BMS, protect it from overcharge, over-discharge, charge over-current, discharge over-current, short-circuit, cell voltage self balance, high-temp discharge cut off
  • Can be charged and discharged in 6000+ deep cycles, which is 3 times longer than lead-acid battery

Editor's Notes

  • About this Store:
    • eco-worthy-us via eBay has a 98.7% positive feedback with over 79k items sold.
    • 30 days returns. Seller pays for return shipping.
  • Additional Information:
    • Coupon expires October 19, 2024.
    • This offer is priced slightly lower ($4 less) than our front page deal from September 2024 when this LFP battery sold for $383.99 at the time.
    • Rated 4.5 out of 5 stars on Amazon based on over 155 customer reviews.
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.

Original Post

Written by Meowssi | Staff

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Deal Score
+32
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Top Comments

The same battery but with Bluetooth integration is just $10 more and a much better deal that allows monitoring and has low-temperature shut off so it doesn't get charged if near freezing, which damages lithium-based batteries.

https://www.ebay.com/itm/126036129048?

It is $399 (+ tax) with the coupon code.
copper ones. If your not willing to do a little research on it, you probably shouldn't tackle that project. How do you even plan on using it? If you want to charge your Eco flow with it directly. expect a very slow rate. approx. 100 to 120 watts unless you buy another thing that boosts the voltage and I'm not even going to get into it. you better do your research. All I can tell you is it's not as simple as adding an Eco flow branded expansion battery. After you do get it connected, you'll still have to figure out how to charge it separately than your Eco Flow. Your EcoFlow isnt made to chage other 12v volt batteries. Not saying it's not more cost effective... It is more cost effective , but there's some big time trade offs and a lot more too it as well.
I got 4 of these the last sale, it's just over 13kw at 48v in series.
I'm getting 4 more, and doing a full hybrid inverter battery backup.
Ran these off a 1000w inverter for 16hrs during Milton before the inverter took a crap. Paralleled two batteries, ran two full size refrigerators, and it was still over 3/4 capacity per the inverter.
If you don't need the bluetooth BMS (which I don't, really), these are a smokin' deal.
Just trying to find an external BMS that I can use to monitor all 8.......

71 Comments

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Oct 15, 2024
50 Posts
Joined May 2019
Oct 15, 2024
daysdrive
Oct 15, 2024
50 Posts
Quote from elefante72 :
Ecoflow uses proprietary battery protocol (for charge) so if you want to use a generic LFP you will need to charge it separately and play some games with an XT/XTi connector. Mine actually came with one. I would just purchase the ecoflow one. Note that at 12V you are going to be limited to input of 15A (I believe), so if you need faster recharge you need to go to higher voltage. If you are JUST looking for 12V an XT connector will suffice. WHATEVER you do please use an inline fuse--you do not want to destroy your Ecoflow. Cheap insurance. Just looked the Ecoflow XTi connector is 300V, 14 ga, 80c. Here is an example of an inline: https://www.amazon.com/Bussmann-H...B000LEQVRQ. (assuming you are looking at one 12V external LFP)Just be aware you will need to charge the LFP separately from the ecoflow if that is not evident.Battery to inverter fuse/breakerThe battery-inverter connection handles significant current, especially when the inverter is powering large loads, making it critical to safeguard against short circuits or power surges. A fuse or breaker ensures that in the event of an overcurrent situation, the flow of electricity is cut off, preventing overheating, equipment damage, or even fire hazards.The size of the fuse or breaker should be carefully selected based on the inverter's power rating and the battery voltage. Typically, the fuse is rated 1.25 to 1.5 times the maximum current draw of the inverter. For instance, if the inverter draws 100 amps, a fuse rated for 125 to 150 amps would be appropriate to handle surges without unnecessary tripping. The fuse or breaker should be installed as close to the battery as possible to minimize the risk of damage to the wiring between the battery and the inverter.​
To use these as a DIY power wall, could I buy any hybrid/offgrid inverter and then just run those into a transfer switch? Trying to figure out how to use these like a better/cheaper DIY solar generator. Thanks!
1
Oct 15, 2024
2,232 Posts
Joined Feb 2014
Oct 15, 2024
elefante72
Oct 15, 2024
2,232 Posts

Our community has rated this post as helpful. If you agree, why not thank elefante72

Quote from daysdrive :
To use these as a DIY power wall, could I buy any hybrid/offgrid inverter and then just run those into a transfer switch? Trying to figure out how to use these like a better/cheaper DIY solar generator. Thanks!
Not sure if you are running solar, but yes you can run this through a transfer switch but I would recommend 48V due to conductor size. You would also need an appropriate MPPT controller and you can recharge that via grid or solar.

Also I would never use these for long term storage because if you are looking at 10-20 years I have no idea what cells are inside and certainly if you want to warranty will this company be around. Also if you are putting 10+ kWh these should be safe I would think LFP are not bulletproof.

If you are running hybrid that means you are on the grid so no transfer switch. If you want to run a manual transfer switch you can get a lower kWh capacity and supplement w/ a generator. That is the most cost effective. In this use case you use the generator to recharge the "powerwall" and your house runs off the MPPT/inverter. That would be the least complex and often you can run the generator in eco mode and let the powerwall deal with inductive spikes. Ironically this is what the newer trucks with onboard generators are going to do and this is how locomotives work.

This is not really a DIY if you don't know what you are doing probably makes sense to do research and go talk in DIY forum.

I have been building these systems in DC for over 20 years so I have some experience in this space and personally have a 12 kWh solar system at my domicile for 8 years.
1
Oct 15, 2024
50 Posts
Joined May 2019
Oct 15, 2024
daysdrive
Oct 15, 2024
50 Posts
Quote from elefante72 :
Not sure if you are running solar, but yes you can run this through a transfer switch but I would recommend 48V due to conductor size. You would also need an appropriate MPPT controller and you can recharge that via grid or solar.Also I would never use these for long term storage because if you are looking at 10-20 years I have no idea what cells are inside and certainly if you want to warranty will this company be around. Also if you are putting 10+ kWh these should be safe I would think LFP are not bulletproof. If you are running hybrid that means you are on the grid so no transfer switch. If you want to run a manual transfer switch you can get a lower kWh capacity and supplement w/ a generator. That is the most cost effective. In this use case you use the generator to recharge the "powerwall" and your house runs off the MPPT/inverter. That would be the least complex and often you can run the generator in eco mode and let the powerwall deal with inductive spikes. Ironically this is what the newer trucks with onboard generators are going to do and this is how locomotives work.This is not really a DIY if you don't know what you are doing probably makes sense to do research and go talk in DIY forum.I have been building these systems in DC for over 20 years so I have some experience in this space and personally have a 12 kWh solar system at my domicile for 8 years.
Thank you. I currently have Bluetti AC300 and 10kwh of their overpriced storage. Really, I'm looking to add more storage for cheaper… so I would use my existing AC300 into this as the "grid power" for the AC300 to charge from. So setup is transfer switch->AC300 setup->110 input of some inverter + this frankenstein cheaper storage->grid power 110v. IMHO that would keep things easy and allow me to use what I already have. If power goes down then thats when the batteries really get used… otherwise they stay topped up.
Oct 15, 2024
2,232 Posts
Joined Feb 2014
Oct 15, 2024
elefante72
Oct 15, 2024
2,232 Posts
Quote from daysdrive :
Thank you. I currently have Bluetti AC300 and 10kwh of their overpriced storage. Really, I'm looking to add more storage for cheaper… so I would use my existing AC300 into this as the "grid power" for the AC300 to charge from. So setup is transfer switch->AC300 setup->110 input of some inverter + this frankenstein cheaper storage->grid power 110v. IMHO that would keep things easy and allow me to use what I already have. If power goes down then thats when the batteries really get used… otherwise they stay topped up.
Personally I would just keep the Bluetti setup and add a dual fuel generator that can recharge the Bluetti. It will be laborious to add 3rd party LFP and pretty expensive. You can get a good 2000w generator for a few hundred bucks and run it on gas or LP.

That is what I do. I also have solar but in the winter I need backup. Of course generator prices are elevated right now but in a few months they will normalize. I bought a 3000w dual fuel inverter one which is very energy efficient from Aldis.
Last edited by elefante72 October 15, 2024 at 01:15 PM.
Oct 16, 2024
24 Posts
Joined Mar 2018
Oct 16, 2024
jasonw2714
Oct 16, 2024
24 Posts
Quote from OrangeApparel8487 :
I got 4 of these the last sale, it's just over 13kw at 48v in series. I'm getting 4 more, and doing a full hybrid inverter battery backup. Ran these off a 1000w inverter for 16hrs during Milton before the inverter took a crap. Paralleled two batteries, ran two full size refrigerators, and it was still over 3/4 capacity per the inverter. If you don't need the bluetooth BMS (which I don't, really), these are a smokin' deal. Just trying to find an external BMS that I can use to monitor all 8.......
I'm happy with my Victron BMV-712 with 500A shunt. A bit pricier, but I haven't had any issues. Just waiting on parts for raspberry pi so I can install Venus OS and monitor my system remotely.
Oct 16, 2024
226 Posts
Joined Mar 2019
Oct 16, 2024
Jordan1918
Oct 16, 2024
226 Posts
Quote from psychosaint :
Can anyone recommend cables for this to backup an ecoflow delta 2?
Just get an inverter with a 12v cig plug. with comparable wattage on the inverter with what your Eco flow can accept in wattage.
Oct 16, 2024
1,781 Posts
Joined Nov 2010
Oct 16, 2024
testshoot
Oct 16, 2024
1,781 Posts
Will Prowse suggests the Siekon which are selling the 100a for $180 now on AZ. If you have an AZ CC you get 5% back making a better battery cheaper.

https://www.amazon.com/gp/product/B0CYKT8DGM

the 100a are easier to handle vs the larger 200s

https://youtu.be/2kooJS3wZaA?si=_046sQw5aOz3XV58

I don't know if Will ever tested the Eco-worthy battery, but on his forum a "solar expert" said this "Sorry but these batts are Eco-turdy they use Grade F cells they are unbalanced from the start, probably the worse brand I have seen. To top it off Amazon actually doesn't even allow returns on some there batteries"

if you want a 200a, The Siekon is $360 after using the $40 coupon

https://www.amazon.com/gp/product/B0D9LSN5PF

and you can still get 5% off with your AZ CC.
Last edited by testshoot October 16, 2024 at 03:18 AM.
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Oct 16, 2024
1,503 Posts
Joined Feb 2007
Oct 16, 2024
coltrane69
Oct 16, 2024
1,503 Posts
Quote from mblitch :
The same battery but with Bluetooth integration is just $10 more and a much better deal that allows monitoring and has low-temperature shut off so it doesn't get charged if near freezing, which damages lithium-based batteries.

https://www.ebay.com/itm/126036129048?

It is $399 (+ tax) with the coupon code.
100% agree, well worth the extra $10. I have two of these non-Bluetooth 280ah ecoworthy batteries in our 3 season RV for or house batteries and they've been fine, but I really wish they'd had the Bluetooth version available when I bought mine last year. It just would be nice to see what's going on inside the batteries, with the app.

Op, I highly recommend adding the Bluetooth version link to your post for $10 more it's just a no brainer.

There always seems to be some haters on these ecoworthy battery deals. I'm still not sure why more of the YouTube solar "experts" haven't actually tested any of these 280ah batteries. Unfortunately, because of this lack of actual testing data, we just get a lot of speculation and heresay about how these use grade "z" cells instead of "a" cells and how these are considered turdworthy.

About 4 months ago on a previous ecoworthy battery post, someone else claimed that these 280ah batts use pouch cells without bracing instead of prismatic cells with bracing. Luckily another Slickdealer proved him wrong by actually tearing down the one he just bought, and posting pictures of the construction, with prismatic cells and bracing, and BMS. Until someone provides empirical data that these use "c" cells and are garbage batteries, all we can do is go by personal experience and by what the Manufacturer advertises. Ecoworthy claims these are "A" cells, and until someone provides data to say otherwise it's just conjecture and speculation.
Last edited by coltrane69 October 16, 2024 at 08:33 AM.
Oct 16, 2024
1,503 Posts
Joined Feb 2007
Oct 16, 2024
coltrane69
Oct 16, 2024
1,503 Posts

Our community has rated this post as helpful. If you agree, why not thank coltrane69

https://slickdeals.net/f/17534874-12v-280ah-eco-worthy-lifepo4-battery-w-6000-cycles-392-free-shippi...

post#107 a fellow slickdealer posted pics of his teardown on this Battery.

1
Oct 16, 2024
127 Posts
Joined Nov 2015
Oct 16, 2024
malestine
Oct 16, 2024
127 Posts
Quote from timp :
We need some solid inverters with app monitoring to go along with these great battery deals
Growwatt makes some decent inverters for these.https://signaturesolar.com/growat...s-ul-1741/
This one is on sale for 750.00
Oct 16, 2024
127 Posts
Joined Nov 2015
Oct 16, 2024
malestine
Oct 16, 2024
127 Posts
Quote from timp :
We need some solid inverters with app monitoring to go along with these great battery deals
https://signaturesolar.com/growat...s-ul-1741/
Oct 16, 2024
2,132 Posts
Joined Nov 2013
Oct 16, 2024
Danimal86
Oct 16, 2024
2,132 Posts
Quote from testshoot :
You want to get a XT60I connector vs the non-I cable. The I version of the cable "fools" the Delta into thinking it is a solar panel. Will charge up to 500w vs up ton200 watt. I bought mine off of AZ.
I've thought about doing this....if you have a lot of solar input then sharge the battery and then trickle the 500w into the Delta.

I can't remember what the voltage input on the delta 2 is, but most likely you'd want to have 2 batteries in series to up the voltage.
Oct 16, 2024
127 Posts
Joined Nov 2015
Oct 16, 2024
malestine
Oct 16, 2024
127 Posts
Quote from daysdrive :
Newbie here. What's the reason for the bluetooth option?
I believe it will tell you when all the internal cells are balanced. Something that's not evident if you just charge to 100% but never leave the battery at 100% to balance all the internal individual cells. It's kind of like a theater where all the guest have sold out the show but as the theater fills up it becomes harder to find a seat. Certain seats in the theater will empty and fill more efficiently, in this case it's electrons.
Oct 16, 2024
1,781 Posts
Joined Nov 2010
Oct 16, 2024
testshoot
Oct 16, 2024
1,781 Posts
Quote from Danimal86 :
I've thought about doing this....if you have a lot of solar input then sharge the battery and then trickle the 500w into the Delta.

I can't remember what the voltage input on the delta 2 is, but most likely you'd want to have 2 batteries in series to up the voltage.
Or get a 12 to 24vdc buck transformer.

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Oct 16, 2024
1,781 Posts
Joined Nov 2010
Oct 16, 2024
testshoot
Oct 16, 2024
1,781 Posts
Quote from coltrane69 :
https://slickdeals.net/f/17534874-12v-280ah-eco-worthy-lifepo4-battery-w-6000-cycles-392-free-shippi...

post#107 a fellow slickdealer posted pics of his teardown on this Battery.
He commented on poor quality vs the superior quality of the Seikon I mentioned above which has the best grade A cells made by EVE.
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