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expiredMeowssi | Staff posted Mar 4, 2024 6:06 PM

Eco-Worthy LiFePO4 Batteries: 12V 50Ah Battery $96, 12V 30Ah Battery

$64

$85

24% off
& More + Free S/Hat eBay
168 Comments
77.7K Views
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Deal Details
Update: This popular deal is still available.

Eco-Worthy-US via eBay has select Eco-Worthy LiFePO4 Lithium Iron Phosphate Multi-Purpose Batteries on sale for the prices listed below when you apply Extra 20% Off coupon code SPRINGSAVE20 at checkout. Shipping is free.

Thanks to Deal Hunter Meowssi for finding this deal.

Examples (prices after code SPRINGSAVE20):

No Longer Available:

Editor's Notes

Written by powerfuldoppler | Staff
  • About this deal:
    • Coupon offer valid through March 17, 2024 at 11:59PM Pacific Time while supplies last.
  • About this store:
    • eBay Seller Info:
      • eco-worthy-us (8,948 feedback rating)
      • 98.2% Positive feedback
    • Return Policy:
      • 30 day returns (Buyer pays for return shipping).
  • Please see original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

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

Eco-Worthy-US via eBay has select Eco-Worthy LiFePO4 Lithium Iron Phosphate Multi-Purpose Batteries on sale for the prices listed below when you apply Extra 20% Off coupon code SPRINGSAVE20 at checkout. Shipping is free.

Thanks to Deal Hunter Meowssi for finding this deal.

Examples (prices after code SPRINGSAVE20):

No Longer Available:

Editor's Notes

Written by powerfuldoppler | Staff
  • About this deal:
    • Coupon offer valid through March 17, 2024 at 11:59PM Pacific Time while supplies last.
  • About this store:
    • eBay Seller Info:
      • eco-worthy-us (8,948 feedback rating)
      • 98.2% Positive feedback
    • Return Policy:
      • 30 day returns (Buyer pays for return shipping).
  • Please see original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by Meowssi | Staff

Community Voting

Deal Score
+47
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Top Comments

Azrael_the_Cat
5.2KComments
801Reputation
Look, I appreciate you engaging but I've been designing battery charges for a long time.

you are misunderstanding the old school ways of setting charge modes and profiles for lead acid batteries. the charge mode and float mode are legacy methods associated with iron core transformers and liner voltage regulators when you needed to physically switch between current levels and voltage levels.

modern chargers current charge up to a taper voltage level then switch to constance voltage mode which is typically 13.5-13.8v. anyway I am sure your understanding is lost in semantic nuances. it's not your fault but I want to help people in the thread understand how it works enough to have the right perceptions.

I won't get into the chemistry but when you put an SLA cell above about 14 ish volts you start to dissociate hydrogen in the electrolyte. That is gas. You may have noticed flooded batts are vented and SLA batteries have pressure release valves built in for this reason to prevent bad things Smilie. see this great article here
https://www.batteriesplus.com/blo...ry-venting


Don't tell me to stop. I'm just correcting you erroneous statements I'm not trying to pick on you. I think you are just extrapolating wrong statements from some simple misunderstandings of the electronics and battery systems

Trust an EE PhD as hard as that might be.

have a great day. and happy to direct you to good articles if interested.
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Ghatid
910Comments
279Reputation
They're bare bones batteries (with BMS). Point me to a blue tooth monitoring + low/high temp protection battery at these prices. 100Ah 12v for $160.
Go to Comment
cptskippy
445Comments
102Reputation
SLA and LiFePO battery chemistries have different charging voltages. An SLA battery has a range from ~11.59-12.46v corresponding to 0% and 100% state of charge. A LiFePO battery's range however is ~10-14.6v.

The charger in a UPS is designed for SLA will cut off charging when the battery reaches 12.46v and shut off the UPS when the battery drops close to 11.59v. That means the LiFePO will never be full charged or discharged. So in that sense it's safe to use in a UPS.

However because it will keep the battery to SLA specs, you'll only be using approximately 23% of the battery's capacity. So that 10ah LiFePO will behave more like a 2.25ah SLA battery in the UPS.
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168 Comments

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Mar 5, 2024 5:11 AM
335 Comments
Joined Jan 2022
obijeewhyenMar 5, 2024 5:11 AM
335 Comments
Do you need a special charger to charge these with?
3
Mar 5, 2024 5:32 AM
1.4K Comments
Joined Feb 2004
IlovedealsMar 5, 2024 5:32 AM
1.4K Comments
Anyone use the 10Ah for their UPS? I read very mixed messages. Some say it works fine with BMS and others say it is a bad idea and lead acid is better for UPS. If it lasts more than twice as long as lead acid it might be worth it.
1
Mar 5, 2024 5:33 AM
6.7K Comments
Joined Dec 2004
CaleoMar 5, 2024 5:33 AM
6.7K Comments

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Quote from obijeewhyen :
Do you need a special charger to charge these with?
They have a BMS onboard so no, no special charger really needed as long as you stay within their specified input voltage limit (14.5V)
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Mar 5, 2024 5:55 AM
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Mar 5, 2024 6:11 AM
910 Comments
Joined Aug 2008
GhatidMar 5, 2024 6:11 AM
910 Comments
Quote from gobblygook :
No low-temp protection, no Bluetooth monitoring.
They're bare bones batteries (with BMS). Point me to a blue tooth monitoring + low/high temp protection battery at these prices. 100Ah 12v for $160.
1
Mar 5, 2024 6:19 AM
1.3K Comments
Joined Dec 2008
Tweak42Mar 5, 2024 6:19 AM
1.3K Comments
Quote from Ilovedeals :
Anyone use the 10Ah for their UPS? I read very mixed messages. Some say it works fine with BMS and others say it is a bad idea and lead acid is better for UPS. If it lasts more than twice as long as lead acid it might be worth it.
I've been using a Weize 10ah lifepo4 in an APC UPC for year and a half with no issues. I don't have more than 100w load on and the longest I've run it loaded was about 10 minutes so I don't know how long it will go before shutdown. The battery is rated at 10a continuous 20a peak, so 120watt load should be in theory what it can handle. I got tired of replacing the lead acid battery every 2 years, so if it makes it past that it will have paid for itself.

I also have a dual 10ah battery APC model that I'm considering trying a pair of these eco-worthy but I'm not sure how well these will work in series, ie. if there are any charge balancing issues.
Mar 5, 2024 6:22 AM
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desidude2000Mar 5, 2024 6:22 AM
1.6K Comments
What is everyone using these for?
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Mar 5, 2024 6:23 AM
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Joined Jan 2010
TsumiMar 5, 2024 6:23 AM
1.3K Comments
Quote from Ilovedeals :
Anyone use the 10Ah for their UPS? I read very mixed messages. Some say it works fine with BMS and others say it is a bad idea and lead acid is better for UPS. If it lasts more than twice as long as lead acid it might be worth it.
Depends on your use case. Keep in mind a 10 Ah can only reliably supply 10 amps or 120 watts continuously. If your load is less than that you're okay, but if it's more the lead acid will be better.

The other thing is the UPS won't be able to reliably give you the % battery remaining because the LFP voltage curve is very flat.
1
Mar 5, 2024 6:33 AM
14.8K Comments
Joined Jul 2006
ben_r_Mar 5, 2024 6:33 AM
14.8K Comments
Dang thats a great price for the 100ah one! I thought the Li Time Mini 100ah was good at $199 during Black Friday. Not sure how this brand compares to the Li Time though.
Mar 5, 2024 6:34 AM
153 Comments
Joined May 2012
chingdaotzeMar 5, 2024 6:34 AM
153 Comments

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

Quote from Ilovedeals :
Anyone use the 10Ah for their UPS? I read very mixed messages. Some say it works fine with BMS and others say it is a bad idea and lead acid is better for UPS. If it lasts more than twice as long as lead acid it might be worth it.
I got these the last time they were on sale and am currently using them in an APC Back UPS 600 [apc.com]. I don't have them powering anything intense (just networking equipment). Out of curiosity, I tested the UPS with a 10W LED lamp - it ran for 4 hours and probably could've gone much longer; I just decided to stop the test. Definitely would get again for low power draw applications.
1
Mar 5, 2024 7:31 AM
557 Comments
Joined Dec 2008
mikek753sdMar 5, 2024 7:31 AM
557 Comments
2 10Ah don't work in Cyberpower , the issue those can't power above 10A, based on what I got was below 8A due to built in small BMS. The BMS just disconnected from UPS at required power draw. Even at 50W usage UPS didn't work reliably.
If you can make 2 batteries UPS to work with those lifepo4, please share how to.
Mar 5, 2024 8:16 AM
153 Comments
Joined May 2012
chingdaotzeMar 5, 2024 8:16 AM
153 Comments
Quote from mikek753 :
2 10Ah don't work in Cyberpower , the issue those can't power above 10A, based on what I got was below 8A due to built in small BMS. The BMS just disconnected from UPS at required power draw. Even at 50W usage UPS didn't work reliably.
If you can make 2 batteries UPS to work with those lifepo4, please share how to.
Based on this reddit post [reddit.com], I ordered some Dakota Lithium [dakotalithium.com] batteries for my APC BN1250G [apc.com].

It currently supports my gaming desktop (5800X3D + RX 6900 XT). The batteries haven't arrived yet, but I'm excited to see how they perform.
1
Mar 5, 2024 8:24 AM
30 Comments
Joined Nov 2011
cpbongMar 5, 2024 8:24 AM
30 Comments
Quote from mikek753 :
2 10Ah don't work in Cyberpower , the issue those can't power above 10A, based on what I got was below 8A due to built in small BMS. The BMS just disconnected from UPS at required power draw. Even at 50W usage UPS didn't work reliably.
If you can make 2 batteries UPS to work with those lifepo4, please share how to.
I have two 12v 10ah in series in both an APC smart UPS 1000 and a cyber power 1350va, both work fine. Both are powering loads less than 240w. I didn't do anything special, just dropped them in. Runs my cable model, router and NAS (about 45w) for about 4 hours. Capacity is less than rated since the SLA charger does not charge lifepo4 to their max capacity, but that is fine with me as long as they last twice as long as the SLA batteries I used to use
Mar 5, 2024 8:58 AM
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Mar 5, 2024 11:44 AM
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