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Shenzhen Luyuan Technology Co., Ltd. Discussion Thread

I've now started assembling an EVE 280ah 8s battery inside one of my custom battery boxes from Amy.


I chose custom larger dimensions because of my enormous 200A BMS, and because I wanted to mount a bluesea fuse on the positive terminal.


I still need to crimp connectors to the Anderson cables and wire the case voltmeter to the terminals. Probably a separate common battery positive and negative busbar would be the cleanest.
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I also haven't bound the cells or BMS yet. The MDF boards are 10mm each and were originally used to compress the cells between hose clamps outside the metal box. As it turns out 10mm MDF is too flexible for the task.
 
Here is my balancing video. I think most would a agree that you should top balance in most situation. Will also has a video.
Do have a link to the charger you are using?
 
Here is my balancing video. I think most would a agree that you should top balance in most situation. Will also has a video.
According to typed out steps you had in the beginning of the video you decided not to charge at the lower voltages first and then work up to 3.6V. Can you explain why?
 
From what I recall (if I am thinking of the right video), Danny follows the MarineHowTo guide (see the link in my signature) mostly including I think using the same power supply recommended by the author (Mastech HY series I believe)
 
I ordered 4 cells from Amy at 'Shenzhen Luyuan Technology Co., Ltd' after seeing a number of people on the forum recommend her. I ordered the cells on June 9th. The ship arrived at my home port around July 22nd (Sydney, Australia) and they were delivered to me on August 2nd.
The cells were in perfect condition and have been performing as expected.

In the weeks that it took for me to receive my cells I spent a long time reading posts on youtube, forums, facbook groups, etc .. and saw that many people have had issues. I'm glad that I went with a seller recommended on the forum and paid a little more compared to the absolute cheapest listings on aliexpress / alibaba.

Just thought I'd add this here for anyone else considering this seller.

Edit: These were the 280AH EVE cells
 
Last edited:
I ordered 4 cells from Amy at 'Shenzhen Luyuan Technology Co., Ltd' after seeing a number of people on the forum recommend her. I ordered the cells on June 9th. The ship arrived at my home port around July 22nd (Sydney, Australia) and they were delivered to me on August 2nd.
The cells were in perfect condition and have been performing as expected.

In the weeks that it took for me to receive my cells I spent a long time reading posts on youtube, forums, facbook groups, etc .. and saw that many people have had issues. I'm glad that I went with a seller recommended on the forum and paid a little more compared to the absolute cheapest listings on aliexpress / alibaba.

Just thought I'd add this here for anyone else considering this seller.

Edit: These were the 280AH EVE cells
I have done the same.
What are you building?
 
I have done the same.
What are you building?
I've made a 280AH 12v battery for my campervan. I have an electric mountain bike which uses a 500wh battery. However with the inefficiencies in the inverter and charger it actually takes around 746wh to charge (that's around 70A at 12v)
When travelling and riding my bike often I like to get two charges per day. My old AGM's didn't like it.
I will also now have the option to use a 'fast charger' to charge the ebike battery even faster.

To charge I have a 40A DCDC charger and a 310W panel on the roof of my van with an MPPT solar charge controller.
 
I am not sure if people have started receiving a Pamphlet/Doc in the Cell boxes yet but this document has now been printed and included with orders for everyone. If you did not get it, then please feel free to download it from here: ➡️ Luyuan Tech Basic Lifepo4 Assembly Guide
Steve: Great job on the guide, You should post it in the resource section for beginners
 
I ordered 4 cells from Amy at 'Shenzhen Luyuan Technology Co., Ltd' after seeing a number of people on the forum recommend her. I ordered the cells on June 9th. The ship arrived at my home port around July 22nd (Sydney, Australia) and they were delivered to me on August 2nd.
The cells were in perfect condition and have been performing as expected.

In the weeks that it took for me to receive my cells I spent a long time reading posts on youtube, forums, facbook groups, etc .. and saw that many people have had issues. I'm glad that I went with a seller recommended on the forum and paid a little more compared to the absolute cheapest listings on aliexpress / alibaba.

Just thought I'd add this here for anyone else considering this seller.

Edit: These were the 280AH EVE cells
Hi AussieKev,

How much was shipping for these cells to Australia?
 
Hi AussieKev,

How much was shipping for these cells to Australia?
It was $100USD to have 4 280AH cells shipped to Sydney. If you're considering buying from these people I certainly recommend them. I've had the cells for a few weeks now and they have been flawless. Since I started looking into these battery builds I've seen soo many people receive dodgy cells and it often because they bought from a seller with no reputation who was selling the cheapest stuff. My advice, pay a bit more and go with someone who has happy customers. Good luck
 
I had ordered a batch of Matched EVE 105's and some other gear as well (BMS & Balancer) from Amy. Everything arrived in perfect condition and exactly as was supposed to be. The cells (with report) are bang on the button. S&H in my case is MOOT because I paid for Air Freight Express due to timing issues (I have a building going up & more and it all has a shedule of sorts, and my (plan flop = cost of air-freight lesson) luckily just the one thing... everything else arrived on shedule. Air-Freight = OUCH !
 
It was $100USD to have 4 280AH cells shipped to Sydney. If you're considering buying from these people I certainly recommend them. I've had the cells for a few weeks now and they have been flawless. Since I started looking into these battery builds I've seen soo many people receive dodgy cells and it often because they bought from a seller with no reputation who was selling the cheapest stuff. My advice, pay a bit more and go with someone who has happy customers. Good luck
Agree 100%

What BMS are you using Kev?
 
Agree 100%

What BMS are you using Kev?
I'm using this battery in my small campervan. I don't need high draw (max 0.17C) so I just got a daly 80A smart bms. A bit finicky to initialise, but otherwise no issues after I changed the sleep settings of the bms. If I needed to worry about freezing temps, high current draw, etc.. I probably would have spent a bit extra on something better.
 
I paid US$179 for 8x280ah cells to be shipped to victoria.
Thanks for this Jimmy and AussieKev.

That I believe is lower than what the Alibaba shipping estimator came up with. Makes the price a good bit more reasonable in the end.

I've just been looking into 18650s to repack a dyson battery and the price per cell is just enormous compared to the capacity in these big ones, and seems so hard to find a reputable source of them.
 
Thanks for this Jimmy and AussieKev.

That I believe is lower than what the Alibaba shipping estimator came up with. Makes the price a good bit more reasonable in the end.

I've just been looking into 18650s to repack a dyson battery and the price per cell is just enormous compared to the capacity in these big ones, and seems so hard to find a reputable source of them.
Yes i'm not sure why they are so much. I was about to do the same with our electrolux vac but ended buying a pre made pack off ebay.
 
Hi everyone, I ordered a set of 4 105Ah eve cells from Amy on the 5th of September for a total cost including exchange fee of $420 AUD delivered to my door near Melbourne. they arrived on the 29th of October, and I was totally impressed with the packaging double boxed then padding and each component in its own box. Im yet to test them as my power supply is yet to arrive (due in the next few days) On check the voltages they were all around 3.2v and within 0.01 volt of each other. I will keep you posted on the capacity test
20211029_124552_copy_756x1008.jpg20211029_124903_copy_756x1008.jpg20211029_125423_copy_756x1008.jpg20211029_125706_copy_756x1008.jpg
 
I had been waiting on my new power supply to arrive to top balance these cells,(still not here maybe tomorrow lol) today after checking them at 3.5v each and within 0.009v I decided they were ready drawing them down at 27A with the use of a hairdryer I managed 109Ah before the inverter shutdown, so I'm going to say I'm happy with them.
 

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