Alkaline
Solar Wizard
DIY with grade A 304 would be around $3700 with a luyuan style box, thats 15KW with a JK BMS, I think this will be next build.
Just ordered 8 304ah.DIY with grade A 304 would be around $3700 with a luyuan style box, thats 15KW with a JK BMS, I think this will be next build.
Just ordered 8 304ah.
Wish me luck!
Nice... where did you end up ordering from and what was the cost?
Is the luyuan style box available in the USA?DIY with grade A 304 would be around $3700 with a luyuan style box, thats 15KW with a JK BMS, I think this will be next build.
No but I would do a bundle order from Amy probably.Is the luyuan style box available in the USA?
18650 battery store.
135.00 each.
EVE LF304 Grade B Cells - 3.2V LiFePO4 304Ah Battery
Price is per battery Grade B Cells - Original QR code is marked up and unreadable. BRAND NEW CELLS - Capacity tested - sorted and matched. Guaranteed to pull 304Ah+ We test all cells (IR, Voltage, Capacity, Visual inspection) returning anything that does not pull above capacity or has any other...www.18650batterystore.com
Very tempting, but since I'm not in a hurry I think I'm going to do another order from China.
I'm about to pull the trigger on an order of CATL cells from Shenzhen Hongxinda New Energy Co. described as:
-CATL 3.2V, the QR code is intact, Grade A, Brand new
-all cells will be tested prior to shipping and battery report provided showing capacities equal to or greater than 320Ah
$112 USD/cell (8 units) plus $309 shipping to Toronto Canada: $1205
If the cells pull the stated 320 Ah, it turns out to be 8,192 watt hours which equates to 14.7 cents per watt hour (for cells only, no housing)
Very tempting, but since I'm not in a hurry I think I'm going to do another order from China.
I'm about to pull the trigger on an order of CATL cells from Shenzhen Hongxinda New Energy Co. described as:
-CATL 3.2V, the QR code is intact, Grade A, Brand new
-all cells will be tested prior to shipping and battery report provided showing capacities equal to or greater than 320Ah
$112 USD/cell (8 units) plus $309 shipping to Toronto Canada: $1205
If the cells pull the stated 320 Ah, it turns out to be 8,192 watt hours which equates to 14.7 cents per watt hour (for cells only, no housing)
Tell them to send you a picture of the QR code first see if you can use the scanner app to make sure it can be read.
Great post, ... I wish I saw this after two company battery problems ... build my own may very well be in the horizon.I don't understand the statement or even recommendations that buying a server rack battery is about the same price as building your own DIY battery.
With the long cycle life of Lifepo4, I think it ultimately comes down to the supporting components that make the difference. As long as you keep the batteries withing the proper voltage they'll last past any of the other parts.
In a DIY system, the BMS breaks, or a something comes loose you swap it out or tighten it. In a server rack battery, you pray the company you bought your server rack battery from is still in business, you fight with them for a replacement, or you ship it back to them and get it back months later. You cannot open it up, because it breaks your warranty. If they are no longer in business, you're harvesting the cells, then building a DIY battery anyways.
Also, due to the exceptionally long life of Lifepo4 there's deals to be found on used cells, just like buying a used car will save you money.
I currently have purchased:
1. 4 x Used BYD 24v battery packs from Batteryhookup April-2020 for about $1200 - I'm still getting about 100ah out of each, but these were purchased knowing they are heavily degraded. I picked them up from their warehouse. They're an awesome company. 200ah@48v
2. 32 x 200ah cells purchased from Alibaba in Jan-2021 for $2177 400ah@48v
3. 32 x 100ah cells purchased from Aliexpress March-2022 for $1249 200ah@48v
4. 30 x 280ah cells June-2022 for $2400 from Craigslist, then 2 x 280ah cells from ebay for $300. Found someone selling these cells locally he was going to use for RV project, but then it got to be too much for him. Two of the cells had shipping damage, so I didn't buy those and bought replacements on ebay. They're not matched, but they have been working great for the 6 months I've had them. 560ah@48v
I paid a significant less amount for the used batteries, but in both scenario's "new" from china and used DIY pricing is much better than the server rack battery. Even after purchasing a BMS & Wiring.
The SOK 48v 100ah battery is currently $1600 * 13 = $20,800
Used average of what I paid per 100ah: $7326 / 1360ah * 100 = $540 per 100ah
The racking from Home depot, bus bars, BMS's, Fuses, and Wiring didn't cost me $13,474, and I have a very modular, serviceable system.
I'm genuinely curious as to why someone chose Server rack batteries, other that they look better or they were easier to setup.
Great post, ... I wish I saw this after two company battery problems ... build my own may very well be in the horizon.
I think it is fun too. JMHO thou.It all boils down to price
I'm about to pull the trigger on an order of CATL cells from Shenzhen Hongxinda New Energy Co. described as:
-CATL 3.2V, the QR code is intact, Grade A, Brand new
-all cells will be tested prior to shipping and battery report provided showing capacities equal to or greater than 320Ah
Wondering if you ever tracked down the Breakers, and could confirm if these are bi-directional or not?Thank you very much for the detailed information.
I'll cross your breakers' reference # and confirm that they are all non polarized, as those prices seem quite interesting.
Again, thanks!!
Hi.Wondering if you ever tracked down the Breakers, and could confirm if these are bi-directional or not?
I double checked the cost on the 250A 2P was $46CAD (about 33USD) plus some shipping costs.
I just bought the six pack because I am looking for a proven solution, but going forward I will probably look at DIY cells. $9k was definitely hard to sign off onI"m assuming most people are buying 3 5kw batts for a typical setup.