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Cheapest 48v 50ah battery I've found so far. $409.99 free shipping

I saw that the other day, it is ECO-WORTHY ( they have the same battery on eBay ) that recently changed the other 48V 50AH to a plastic case so it looks this is now the replacement.

On Amazon, if you get two there is a $350 off coupon ( $850 before taxes ) so that's 5.120 Kw for ~$900 all in.

Battery prices are plummeting, China economy is not doing well and EV sales are drying up, so excess manufacturing capacity leads to what we are seeing.
 
Amy Wan of Shenzhen Luyuan is building a custom 24v 105ah battery to spec for me, $100 more than this shipped with matched Eve cells with data sheets and JK active balancing BMS. I'm sure she could do the same for 48v 50a.
 
I use a couple of these :

www.ebay.com

ECO-WORTHY 48V 100Ah LiFePO4 Lithium Battery (2 Pack 50ah) Club Car Golf Cart | eBay

It weighs only 58.42lbs, only 1/3 of the weight of lead-acid Battery and only 2/3 the size of it. LiFePO4 Battery. 【Long life cycle】. Solar Panel Kit. Solar Battery System. More information. 【Travel Longer】.
www.ebay.com

They are in parallel with a DIY 100Ah and one of the original EG4 (GYLL) batteries.

The GYLL was detailed here over 3 years ago :

diysolarforum.com

100 Ah LiFePO4 @ $1250 usd. 48v nominal

Let me start by saying that I have an affliction where I read almost every post on this forum. I then wander down various paths following up on what I find interesting. I recently came across this company on one of my rabbit hole trips and I cannot remember the thread where I found this...
diysolarforum.com diysolarforum.com

The Eco Worthy pair, at $912 shipped, was cheaper than either the GYLL or my DIY 100 Ah batteries.

AND, the case screws on the Eco Worthy don’t require a torch to remove. There is a crap ton of empty space inside that steel case though ?.
 
Last edited:
JoeHam said:
I use a couple of these :

www.ebay.com

ECO-WORTHY 48V 100Ah LiFePO4 Lithium Battery (2 Pack 50ah) Club Car Golf Cart | eBay

It weighs only 58.42lbs, only 1/3 of the weight of lead-acid Battery and only 2/3 the size of it. LiFePO4 Battery. 【Long life cycle】. Solar Panel Kit. Solar Battery System. More information. 【Travel Longer】.
www.ebay.com

They are in parallel with a DIY 100Ah and one of the original EG4 (GYLL) batteries.
Click to expand...
Nice price compared to the Amazon price on those.
 
BTW, I don't see the deal anymore, maybe they saw this post, got scared someone may actually do it and post results.
 
BuffaloTrace said:
BTW, I don't see the deal anymore, maybe they saw this post, got scared someone may actually do it and post results.
Click to expand...
Yup, the deal seems to have ended. It's still one of the cheapest (if not the cheapest) 48v 50ah batteries on Amazon.. even without the extra $150 coupon.
 
Funny how the internet works, I was actually looking at this exact set, not for solar bank but to see how cheaply I can create a budget friendly lithium conversion for my golf cart. I decided to buy one at the end of last week and then this morning the coupon came back up and allowed me to buy a second unit with 150.00 off ($443.81 delivered for each 48v50ah). So in short, I picked up two DC House 48v 50ah units just to see what happens. The title stated that they have a 200A peak on the BMS but I had my doubts, why I picked up two to run parallel, if they are garbage I will just send right on back to eco worthy and tell them to kick rocks. I hope that isnt the case.

Anywho, I have been watching everyone in here make such enthusiastic speculations and remarks about the quality but no one popped and bought one. Since I am of no such way an expert on lifepo4 packs beyond hobby grade RC cars, I figued I'd let yall know that you now know a guy who actually picked one up. I plan to split that case open and show you in all of its chinese glory, just exactly what is inside. Then hopefully someone with more expertise than me on these units can judge. For you solar guys it will be a good way to see what your money is getting you, for me... I just want to get through 18 holes once a month without spending $1k every 2-3 years on lead acids.
 
Nothing in there jumps out as turdy.

Ick for welded terminals, but they look like decent welds.

I'd check the sense wire screws have 0% probability of hitting the tops of the cells. If that's 6awg, wire, it should handle the 50A.

Hmmm... odd that the wires are unprotected as they enter the channels, but then they're shrouded in something fuzzy while in the nice smooth channel?
 
BuffaloTrace said:
Any protection between cells? I don't see anything visible in the pictures. Also, much thanks for peeling the lid back and documenting with visuals.
Click to expand...
Nothing more than the blue wrap that every lithium cell seems to have.
I'm more disappointed that they have a clear set of specifications on delivery but not posted like every other battery. The bms definitely isn't rated solo for the amperage required by a 3hp dc motor pulling a cart up hill.. glad I picked up a second unit. Maybe 100A will be fine.
Question, this unit doesn't have an on/off like other metal cased 51.2v units, so what happens when I go over 200A/10s or 50A continuous? I know the bms will shut off, when/what will get it back up and running?
 
TheAngryGerman said:
Nothing more than the blue wrap that every lithium cell seems to have.
I'm more disappointed that they have a clear set of specifications on delivery but not posted like every other battery. The bms definitely isn't rated solo for the amperage required by a 3hp dc motor pulling a cart up hill.. glad I picked up a second unit. Maybe 100A will be fine.
Question, this unit doesn't have an on/off like other metal cased 51.2v units, so what happens when I go over 200A/10s or 50A continuous? I know the bms will shut off, when/what will get it back up and running?
Click to expand...
Open it up and disconnect the BMS from the cells, that should reset it. :unsure:
 
Connecting it to a proper voltage charger should also reset it.
The build quality looks pretty decent. I like the balance leads are easily removed, this will make BMS replacements / upgrades easy. I dislike there doesn't appear to be any separators between the cells.
Can you see the front of the BMS to determine a brand?

Thank you @TheAngryGerman for taking a gamble for the community and for taking the time to open it up and post photos.
 
sunshine_eggo said:
Hmmm... odd that the wires are unprotected as they enter the channels, but then they're shrouded in something fuzzy while in the nice smooth channel?
Click to expand...
Without any cell protection and the above wire potential for insulation abrasion, I'm unsure this battery would be suitable for any mobile applications.
Though it appears to be well built, and would only require simple modification to rectify those 2 issues. Nice looking and super simple overall. I like it.
 
42OhmsPA said:
Connecting it to a proper voltage charger should also reset it.
The build quality looks pretty decent. I like the balance leads are easily removed, this will make BMS replacements / upgrades easy. I dislike there doesn't appear to be any separators between the cells.
Can you see the front of the BMS to determine a brand?

Thank you @TheAngryGerman for taking a gamble for the community and for taking the time to open it up and post photos.
Click to expand...
You are welcome for the info, knowledge is always good. I cannot see the BMS due to the recessed handle insert coming right into the face of the unit, thus the unit has a protective film on it. I'd have to pull it out to see it and I don't really care to do that just yet. If it fails then I will see if it's easy to pull. The cells are very well held with the cross bars so even though they don't have separators, I don't see the cells jostling around or getting damaged, I'ma run it on the cart in parallel, I'll use a DC up converter to push a 20v portable battery on my Bluetooth speaker up to 60v output just to reset the BMS in case I pop the damn thing at a start up, hill or WOT. Also, not on the picture, the tops of the cells have a piece of thin plastic plate that covers them up, not that it should really matter as the cross bars keep the cells secured, I just didn't take a pic of it
 
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TheAngryGerman said:
Since they didn't post the actual specs online but did put one in the box, I figured I would share it as well. Enjoy the pictures.
Click to expand...

How much current draw do you need to provide for your golf cart ?

At 25 Amps per battery…………
 
TheAngryGerman said:
Since they didn't post the actual specs online but did put one in the box, I figured I would share it as well. Enjoy the pictures.
Click to expand...
I see a QR code peeking up on the BMS between the blue and black wires. Any chance you can scan it and post the results?
Thanks for the photos!
 
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