rmcelwee
Solar Enthusiast
The left most port.
ECO-WORTHY 48V 100Ah 5120Wh LiFePO4 Server Rack Battery
- Thread starter BarracudaBob
- Start date
rmcelwee
Solar Enthusiast
Is this what I should be doing? Is hooking up to the RS485-1 jack more apt to kill my adapter?
sunny-side-up
New Member
Yup, around the 98/99% SOC the v-delta is all over the place, something I didn't expect since there's supposed to be a balancer on the BMS.
Correct, and not even close to a decent charge.
I've read your battery-bootcamp and ordered the balancer and bench charger, they should be here within a week or 2.
Great write-up, well explained!
A pitty these battery's don't come with a decent balancer.. They cost 30-40$ on amazon, maybe $5 on alibaba..
sunny-side-up
New Member
I didn't see the benefit in buying 2 desk chargers, a load-tester, and then having to manually move the clamps from the charger and the clamps from the load-tester to each and every cell and switch them out every so-many seconds....
Versus hooking up an Enerky balancer, 58.4v 1,5-3amp, and let it sit... Less chances for errors, and probably not that much slower.
marionw
Solar Wizard
You can use either. By using the RS232 jack on the Master you can monitor all EW batteries in the stack with a single connection to the Master otherwise you need to connect to the RS485-1 on each battery to monitor all batteries.
Either jack works and will not damage the the BMS or adapter assuming you have wired everything correctly
rmcelwee
Solar Enthusiast
I'm seeing everything with one cable on the RS485-1. (EW software as well as Solar Assistant) The only problem is the RS485 cable blows up once a month.
BarracudaBob
Harvesting free photons from clean fusion
I have had the same issue with EG4, Vatrer, and some 12V budget batteries. You can go through the long charge, discharge, charge, and use a very small 50ma power supply to walk them up at the last end.
OR
Put an active balancer on it and cycle one or two times. It does a fantastic job and once all balanced out it will hold it with no need for an external balancer. The internal BMS Balancer is such low current that if it is way out like when new it needs help.
The Battery Bootcamp is the fastest methough that give excellent and reproducible results in the shortest amount of time.
sunny-side-up
New Member
And with the least amount of effort and investment you might add.
Gonna close the loop on this one. I was able to get the eco-worthy 48v 100ah batteries to communicate with the EG4 Chargeverter GC finally. What I had to do was make an RJ45 cable with pin 1 on the CV side to pin 8 on the battery side, pin 2 on the CV side to pin 7 on the battery side but then I had to set the batteries RS485 port from Pylon to Growatt. Goes against everything that I've seen online telling me that pylon is the way to go. Either way, Growatt is what allowed me to connect the batteries with closed loop communication to Chargeverter GC. Hope that this help someone else.
BarracudaBob
Harvesting free photons from clean fusion
sounds like you need to get the batteries to 56.8V to reset the BMS's. If they don't get there for a while they get lost.
sunny-side-up
New Member
The delta on my battery's is still all over the place, the least is 112mv, and not budging.
Waiting on the final pieces for the battery bootcamp to be delivered, and figuring out how to safely disconnect 6 out of the 12 batterys, and than going over them 1 by 1.
BarracudaBob
Harvesting free photons from clean fusion
I am sorry you are experiencing the balance issue. I have been here many times over the years on different brands. You will have a perspective on the Battery Bootcamp and be able to report after a top balance and a couple of deep cycles permanently solves your issue. With the price of everything the Active Balancer is a minor investment.
I have had others direct message me and say that it worked great for them. I wonder if they didn't want to admit on the forum that it worked. Opinions are changing and now see it as just another tool in the tool case.
I never saw the conflict between a passive balancer that bleeds off extra energy through a resistor vs an active that steals from the higher to give to the lower. I should have called it the Robin Hood Procedure
I don't take credit for active balancers but I am the first to suggest it be used as a top balancer and optimiser temporarily.
Disclaimer "Some deep cycling required"
I have had others direct message me and say that it worked great for them. I wonder if they didn't want to admit on the forum that it worked. Opinions are changing and now see it as just another tool in the tool case.
I never saw the conflict between a passive balancer that bleeds off extra energy through a resistor vs an active that steals from the higher to give to the lower. I should have called it the Robin Hood Procedure
I don't take credit for active balancers but I am the first to suggest it be used as a top balancer and optimiser temporarily.
Disclaimer "Some deep cycling required"
SolarTruthSeeker
Solar Enthusiast
after following your advice the batteries have been incredibly well balanced, never seen anything like it, cells are all within 1mv every time I check.. unfortunately haven't been able to replicate it with the eg4 batteries.I am sorry you are experiencing the balance issue. I have been here many times over the years on different brands. You will have a perspective on the Battery Bootcamp and be able to report after a top balance and a couple of deep cycles permanently solves your issue. With the price of everything the Active Balancer is a minor investment.
I have had others direct message me and say that it worked great for them. I wonder if they didn't want to admit on the forum that it worked. Opinions are changing and now see it as just another tool in the tool case.
I never saw the conflict between a passive balancer that bleeds off extra energy through a resistor vs an active that steals from the higher to give to the lower. I should have called it the Robin Hood Procedure
I don't take credit for active balancers but I am the first to suggest it be used as a top balancer and optimiser temporarily.
Disclaimer "Some deep cycling required"
BarracudaBob
Harvesting free photons from clean fusion
I had to permanently add 3 balancers out of 6 of my EG4 LifePower4 V1 batteries. They refused to hold a differential 30mv or less.
Bill Young
Engineer from ECO-WORTHY
Hi guys,
Today, we're extremely proud to share a major achievement that our team has been working on for a long time: the ECO-WORTHY 51.2V 100Ah server rack battery (ECO-LFP4810002) has successfully completed comprehensive testing by Intertek and has officially earned two key North American safety certifications: UL 1973 and UL 9540A.
UL 1973: This certification thoroughly evaluates the electrical and mechanical safety of a battery during normal operation. Passing this test proves that our battery, from the individual cells to the BMS (Battery Management System) and the overall physical structure, is designed and manufactured with reliable processes. It's a solid guarantee for the stable operation of your energy storage system.
UL 9540A: This test focuses on safety in extreme conditions. It evaluates the battery's ability to suppress the spread of fire by simulating a severe thermal runaway scenario. Passing this test shows that our battery's design fully accounts for potential risks, adding a crucial layer of fire protection for household energy storage safety.
Obtaining these two certifications means our product's safety level has reached the rigorous, recognized standards of the North American market. This is our responsibility to every user and is at the core of our product development passion.
In the current market, we're pleased to note that it's the most affordable server rack battery to hold both UL 1973 and UL 9540A certifications. We hope that through this effort, more DIY enthusiasts will be able to confidently and safely incorporate a core component that meets top-tier safety standards into their own systems.
We look forward to engaging in a deep discussion with all of you in the forum about this milestone and hearing your insights on our products and technology.
Thank you for your attention.
Today, we're extremely proud to share a major achievement that our team has been working on for a long time: the ECO-WORTHY 51.2V 100Ah server rack battery (ECO-LFP4810002) has successfully completed comprehensive testing by Intertek and has officially earned two key North American safety certifications: UL 1973 and UL 9540A.
UL 1973 and UL 9540A Certifications: Our Commitment to Safety
We understand that when it comes to energy storage systems, safety is the most crucial foundation. These two certifications represent our unwavering commitment to product safety.UL 1973: This certification thoroughly evaluates the electrical and mechanical safety of a battery during normal operation. Passing this test proves that our battery, from the individual cells to the BMS (Battery Management System) and the overall physical structure, is designed and manufactured with reliable processes. It's a solid guarantee for the stable operation of your energy storage system.
UL 9540A: This test focuses on safety in extreme conditions. It evaluates the battery's ability to suppress the spread of fire by simulating a severe thermal runaway scenario. Passing this test shows that our battery's design fully accounts for potential risks, adding a crucial layer of fire protection for household energy storage safety.
Obtaining these two certifications means our product's safety level has reached the rigorous, recognized standards of the North American market. This is our responsibility to every user and is at the core of our product development passion.
Making Top-Tier Safety Standards Accessible
We've always believed that top-tier safety shouldn't be a privilege for a few. This dual-certified battery is now available for sale on Amazon and the official ECO-WORTHY website (with an eBay launch expected on the 22nd of this month).In the current market, we're pleased to note that it's the most affordable server rack battery to hold both UL 1973 and UL 9540A certifications. We hope that through this effort, more DIY enthusiasts will be able to confidently and safely incorporate a core component that meets top-tier safety standards into their own systems.
A Message to Our Long-Term Supporters
Every step of ECO-WORTHY's progress is inseparable from the long-term support and valuable feedback from this forum, especially from our long-time users who have actively participated in product improvements. This trust is our most cherished asset. We want to let you know that a special discount for our long-term customers is planning, and we hope it will serve as our most sincere expression of gratitude. Please stay tuned.We look forward to engaging in a deep discussion with all of you in the forum about this milestone and hearing your insights on our products and technology.
Thank you for your attention.
Rocksnsalt
Solar Addict
@Bill Young
This is great news, props and congratulations to Eco-Worthy for getting this done.
Will the existing V2 and V3 server rack batteries customers have be eligible to carry these UL 1973 and 9540A designations, or is it only batteries launched / sold as of 9/22/25?
And going forward, will Refurbished “UL” batteries still be UL?
EDIT: Just found the Intertek UL cert on refurbished on Ebay, and is in the Amazon listing for new.
(Since there is a “launch” 9/22 I’m guessing maybe only the new releases can/will be UL)
Also note it appears the V2 battery is shown on the Amazon linked E-W page, and I did not find UL batteries listed yet.
This is great news, props and congratulations to Eco-Worthy for getting this done.
Will the existing V2 and V3 server rack batteries customers have be eligible to carry these UL 1973 and 9540A designations, or is it only batteries launched / sold as of 9/22/25?
And going forward, will Refurbished “UL” batteries still be UL?
EDIT: Just found the Intertek UL cert on refurbished on Ebay, and is in the Amazon listing for new.
(Since there is a “launch” 9/22 I’m guessing maybe only the new releases can/will be UL)
Also note it appears the V2 battery is shown on the Amazon linked E-W page, and I did not find UL batteries listed yet.
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fuzzmunky415
I've seen CudaBob's crimper
Very timely! Was just thinking last night how much longer, and as I had figured 1973 had resolved, we were waiting for 9540A and/or current stock depletion, to factory affix both stickers to product.
You may already be doing it, but if not, there is a form and process to be listed on the Cal Energy Commission list for certified equipment, they claim to update the list 3 times monthly:
Solar Equipment Lists Program
Congrats Bill! A successful achievement!
Rocksnsalt
Solar Addict
It IS a great accomplishment and really makes Eco-Worthy a solid choice.
Now, when will the 0% 60-72mo financing be available?
Now, when will the 0% 60-72mo financing be available?
fuzzmunky415
I've seen CudaBob's crimper
Why not 84 month!?!It IS a great accomplishment and really makes Eco-Worthy a solid choice.
Now, when will the 0% 60-72mo financing be available?
Rocksnsalt
Solar Addict
At 0% I’d be all in on a 30 year plan!Why not 84 month!?!
JonMez
Solar Enthusiast
I can’t tell if this is a serious question or not but any manufacturer offering you subsidized financing is making you pay more for the product than you should have so that they can eat the subsidy. I would just rather have a cheaper product… if you need to finance your batteries then that’s on youIt IS a great accomplishment and really makes Eco-Worthy a solid choice.
Now, when will the 0% 60-72mo financing be available?
Rocksnsalt
Solar Addict
Yes it’s on me and I’m ok with that if it’s a lower than market interest rate and the product is priced competitively in it’s market. Add 30% tax credits to that, and the deal is sweetened.
You are ignoring certain market conditions that can and do occur, though I’m not saying those conditions are present in this battery market at this time. Sometimes mfg’s accept making less profit in order to move inventory. It can be to make room for a new model, keep the doors open, or a number of other reasons, like maybe selling as much product as possible before tariffs occur, or tax credits expire.
I’d rather have money continue to work for me earning returns above borrowing rates.
But that’s just me, to each their own.
Anywayyyy back to batteries and solar…
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JonMez
Solar Enthusiast
Not saying it wouldn’t make sense to finance a solar product - just saying I’d rather get the price price on the batteries etc and sort it out on my own.
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