Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Heads up, this deal has expired. Want to create a deal alert for this item?
expiredRed_Liz | Staff posted Jun 10, 2026 04:32 PM
  1. Deal Image
Item 1 of 2
  1. Deal Image
  2. Deal Image
Item 1 of 2
expiredRed_Liz | Staff posted Jun 10, 2026 04:32 PM

2-Pk ECO-WORTHY 102Wh 12V 8AH LiFePO4 Lithium Battery for UPS

+ Free S&H

$40

$50

20% off
eBay
42 Comments
9,484 Views
Visit eBay
Good Deal
Save
Share
Deal Details
eco-worthy-us via eBay has 2-Pack ECO-WORTHY 102Wh 12V 8AH LiFePO4 Lithium Battery for UPS on sale for $49.99 - $10 (20%) off when you apply coupon code FAVEDEAL20 on the checkout page = $39.99. Shipping is free.

Thanks to Staff Member Red_Liz for sharing this deal.

About this product:
  • 12V 8Ah LiFePO4 lithium batteries w/ 102Wh capacity
  • Built-in BMS protects against overcharge and short circuit
  • Maintains 80% capacity after 3000 deep cycles
  • Supports fast charging, solar charging, and capacity expansion
  • Suitable for UPS, RV, marine, off-grid, and backup power systems

Editor's Notes

Written by qwikwit | Staff
  • About this Store:
    • eco-worthy-us via eBay has a 99.1% positive feedback with over 141K items sold.
    • 30 days returns. Seller pays for return shipping.
  • Additional Information:
    • Coupon offer valid through June 14, 2026 at 11:59PM PT, while supplies last.
    • 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 Red_Liz | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
eco-worthy-us via eBay has 2-Pack ECO-WORTHY 102Wh 12V 8AH LiFePO4 Lithium Battery for UPS on sale for $49.99 - $10 (20%) off when you apply coupon code FAVEDEAL20 on the checkout page = $39.99. Shipping is free.

Thanks to Staff Member Red_Liz for sharing this deal.

About this product:
  • 12V 8Ah LiFePO4 lithium batteries w/ 102Wh capacity
  • Built-in BMS protects against overcharge and short circuit
  • Maintains 80% capacity after 3000 deep cycles
  • Supports fast charging, solar charging, and capacity expansion
  • Suitable for UPS, RV, marine, off-grid, and backup power systems

Editor's Notes

Written by qwikwit | Staff
  • About this Store:
    • eco-worthy-us via eBay has a 99.1% positive feedback with over 141K items sold.
    • 30 days returns. Seller pays for return shipping.
  • Additional Information:
    • Coupon offer valid through June 14, 2026 at 11:59PM PT, while supplies last.
    • 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 Red_Liz | Staff

Community Voting

Deal Score
+32
Good Deal
Visit eBay

Leave a Comment

Unregistered (You)

Top Comments

SDHank
28 Posts
14 Reputation
It's very difficult to find the full specs on these but if you take the time you'll find that these are only rated at 10 amp discharge. That means that for a typical UPS using both batteries you're only getting 240 watts maximum output.
Here's one of the few listings I saw where discharge current was listed at all.
https://www.amazon.co.uk/ECO-WORT...B08ZSBS1ZY
natecmd
256 Posts
73 Reputation
LiFePo4 batteries are one of the safer lithium chemistries. Search for Will Prowse on YouTube and there's a recent video where he used a spark generator to try and ignite a damaged battery that was venting flammable gasses in an enclosure that kept the gases contained. It seemed to take a lot of work, and a reasonably built battery operated under normal conditions (charging/discharge rates) and stored in a cool/dry place seems to have a favorable risk profile for most.

42 Comments

Sign up for a Slickdeals account to remove this ad.

Jun 10, 2026 06:50 PM
28 Posts
Joined Nov 2017
SDHankJun 10, 2026 06:50 PM
28 Posts

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

It's very difficult to find the full specs on these but if you take the time you'll find that these are only rated at 10 amp discharge. That means that for a typical UPS using both batteries you're only getting 240 watts maximum output.
Here's one of the few listings I saw where discharge current was listed at all.
https://www.amazon.co.uk/ECO-WORT...B08ZSBS1ZY
8
Jun 10, 2026 10:46 PM
4 Posts
Joined Nov 2017
YrrdeadJun 10, 2026 10:46 PM
4 Posts
Quote from SDHank :
It's very difficult to find the full specs on these but if you take the time you'll find that these are only rated at 10 amp discharge. That means that for a typical UPS using both batteries you're only getting 240 watts maximum output.Here's one of the few listings I saw where discharge current was listed at all. https://www.amazon.co.uk/ECO-WORT...B08ZSBS1ZY
Thinking about this for solar+led night lights for a kids play structure? Overkill or about right?
Jun 10, 2026 10:51 PM
13 Posts
Joined Oct 2010
dirty504Jun 10, 2026 10:51 PM
13 Posts
Quote from Yrrdead :
Thinking about this for solar+led night lights for a kids play structure? Overkill or about right?
If I had to put solar+led night lights on a kids play structure, I'd get one of those battery packs with a solar panel built in and run the LED's directly off that.
Jun 10, 2026 10:51 PM
751 Posts
Joined Nov 2007
far3320Jun 10, 2026 10:51 PM
751 Posts
If putting these in my house, I wonder if I should get a lithium fire extinguisher. Supposedly lithium batteries cannot be extinguihsed by regular fire extinguishers.
3
Jun 10, 2026 10:56 PM
28 Posts
Joined Nov 2017

This comment has been rated as unhelpful by Slickdeals users.

Jun 10, 2026 11:03 PM
958 Posts
Joined Dec 2016
DataMeisterJun 10, 2026 11:03 PM
958 Posts
What UPS do these actually go in? Most of them come with Lead Acid, which I assume uses different charging methods.
Jun 10, 2026 11:05 PM
256 Posts
Joined Oct 2012
natecmdJun 10, 2026 11:05 PM
256 Posts

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

Quote from far3320 :
If putting these in my house, I wonder if I should get a lithium fire extinguisher. Supposedly lithium batteries cannot be extinguihsed by regular fire extinguishers.
LiFePo4 batteries are one of the safer lithium chemistries. Search for Will Prowse on YouTube and there's a recent video where he used a spark generator to try and ignite a damaged battery that was venting flammable gasses in an enclosure that kept the gases contained. It seemed to take a lot of work, and a reasonably built battery operated under normal conditions (charging/discharge rates) and stored in a cool/dry place seems to have a favorable risk profile for most.
2

Sign up for a Slickdeals account to remove this ad.

Jun 10, 2026 11:08 PM
252 Posts
Joined Mar 2018
PurpleSink3298Jun 10, 2026 11:08 PM
252 Posts
Quote from Yrrdead :
Thinking about this for solar+led night lights for a kids play structure? Overkill or about right?
This can be an awesome setup for a shed or any other off grid small scale setup. I'd pair these with a 80w-100w solar panel and a cheap charge controller. These lifepo4 are fantastic for a setup like that. Kids use stuff until it's dead-dead and that murders SLA batteries. These are built to go all the way dead (built-in cutoff) and they have great capacity and runtime.
I have a similar setup in my shed to power overhead motion controlled work lights and charge the kids power wheel batteries!
1
Jun 10, 2026 11:20 PM
748 Posts
Joined Dec 2004
lowspeedJun 10, 2026 11:20 PM
748 Posts
Quote from DataMeister :
What UPS do these actually go in? Most of them come with Lead Acid, which I assume uses different charging methods.
Curious too. I wonder if it can replace those because of the BMS
Jun 11, 2026 12:03 AM
31 Posts
Joined Sep 2016
LeeC5938Jun 11, 2026 12:03 AM
31 Posts
Quote from Yrrdead :
Thinking about this for solar+led night lights for a kids play structure? Overkill or about right?
At this price pretty solid
Jun 11, 2026 12:04 AM
31 Posts
Joined Sep 2016
LeeC5938Jun 11, 2026 12:04 AM
31 Posts
I was thinking this would be an interesting option for 48v golf cart batteries but then saw post about 10amp max output and that kind of kills it
Jun 11, 2026 12:32 AM
2,242 Posts
Joined Nov 2013
Danimal86Jun 11, 2026 12:32 AM
2,242 Posts
These look like they are meant for a UPS but I can't find the dimensions
Jun 11, 2026 12:50 AM
481 Posts
Joined Nov 2012
agentsteveJun 11, 2026 12:50 AM
481 Posts
Unless you need this specific size or have extreme cost constraints, you can get a much, much more capable battery for just a bit more money. This is 2x the cost but has 5x the capacity, Bluetooth and 5x the output of both batteries here put together.

https://slickdeals.net/f/19593639
Last edited by agentsteve June 10, 2026 at 05:53 PM.
Jun 11, 2026 01:03 AM
28 Posts
Joined Nov 2017
SDHankJun 11, 2026 01:03 AM
28 Posts

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

Quote from DataMeister :
What UPS do these actually go in? Most of them come with Lead Acid, which I assume uses different charging methods.
None. That was the point of my post. They can't deliver enough current.
1
2

Sign up for a Slickdeals account to remove this ad.

Jun 11, 2026 01:04 AM
15 Posts
Joined Apr 2018
SplendidGiraffe8780Jun 11, 2026 01:04 AM
15 Posts
Will those work and fit in a battery backed up garage door opener?

Leave a Comment

Unregistered (You)

Related Searches

AutosAutomotive ToolsAutomotive Battery ChargersFree ShippingTech & ElectronicsTech AccessoriesBatteries

Popular Deals

See All
Found by neomatrixviper
Yesterday 11:19 PM
Forum Thread
Noodle Memory Foam Bath Rug, 2-pack $29.99 Tan, Green, Gray or BlueFree Shipping Costco.com
1
Found by kavurma
Today 05:20 PM
Forum Thread
New York Knicks Special: 53¢ Pizza Slices at East Village Pizza 🍕🗽 $0.53$0.53$4.99
89% off
2
Found by idk_then
Today 06:08 PM
Forum Thread
4-Pack Puroma TSA Approved 4-Digit Combination Luggage Locks (Black) $9.99 + Free Shipping$9.99$20
50% off
0
Found by esmbsanmig
Today 11:53 AM
Forum Thread
Bath & Body Works Semi Annual Sale 75% off select items $3$3.00$3.00
0
Found by kenmikec
Today 02:03 PM
Forum Thread
Joyspun Women's Cotton Terry Robe $11.61+$12$40
70% off
0

Trending Deals

See All
Found by Dr.W
Today 06:25 AM
Forum Thread
Open-Boxes: ASUS ZenBook A16: 16" 3K OLED 120Hz Touch, Snapdragon X2 Elite Extreme X2E-94-100, 48GB LPDDR5-9600, 1TB SSD $1328.99$1,329$1,700
21% off
6
Found by Smyrhna
Today 10:35 AM
Forum Thread
Costco Members: Get $450 value ($150 + $50 Costco GC + $250 Prepaid Visa GC) when switching to T-Mobile's Experience Beyond plan
10
Found by TenaciousJP
Today 12:19 PM
Forum Thread
TCL QM6K Pro 85" - 144Hz Mini-LED 4K TV + 5-Year Warranty $999$999
6
Found by tDames
Yesterday 04:10 PM
Forum Thread
Costco Members: 98" TCL Class QM6K Pro Series 4K QD-Mini LED Smart TV w/ 5 Year Warranty + Free Install $1799.98 + Free S&H$1,800
10
Found by David_David
Today 12:57 PM
Forum Thread
Refurbished: EcoFlow River 3 Plus 286Wh Wireless Boost Combo & 5000mAh RAPID Power Bank $149$149$459
67% off
2