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There are many videos on building your own batteries. This video is quite good the other advantage of building your own is you can replace dead cells if necessary.
Your BMS cost is too high, you can buy a nice JK BMS 100A-16s for less than 90$USD. Same for an 4s one for under 60$USD. But i'm in sync with you, for small project, way better to buy it than DIY.
Yes, you can get cheaper BMS'es. Like I said in the video, you won't get support from cheap BMS'es, so I recommend going a bit more expensive so you get the support and proper documentation.
No need for extra cables because you use the busbars. Enclosures is the racking that I have included. Clamps are not required because they will not get their 8,000 cycles anyway because of calendar aging of the cells.
spot on except these do not average 48V, they average 52 volts. so 14.56kw. I have 4 of these banks. I average 13.5kw as I do not use 100% of capacity. I agree I saved huge amounts of money building my own. When I bought mine I saved almost $16000. Prices are lower now. Mine have been up and running for over a year now and I bought mine 1 year before I installed them.
Yes, your battery would have saved you quite some money. How did you house the cells? Did you use a battery shelf? I have used 3.2V per cel, so 3.2V x 16 cells x 280Ah=14.336kWh. For the server rack, I used 3.2V x 16 cells x 100Ah= 5.12kWh. Did i calculate with a 3V cell somewhere?
The wire harness is included in the price. Terminal lugs are not included, because you need them with server racks too. Fuse is not included, protective box is not needed when placing on battery shelf. Watch the end of the video where I talk about it.
Thank you, Very informative description and understanding of the differences, But i would like to know even though you give comparison prices between 2 different suppliers, Do you really believe that (Made in CHINA) products are as good as USA or Canada made ? Thank you your content is very well done 👍
I would challenge you to find a supplier of Lithium iron phosphate cells, made in America or Canada that will sell to the general public. China owns the VAST majority of lithium chemistry cell production and does it well - so much so that the government there has regulations controlling cell quality to protect China's national brand.
I don't know about any battery cells made in the us. So that doesn't leave us with many options. The cells in china are of great quality if you have a good source. The cells are made by only a handful of companies which go through rigorous inspection.
Thank you for the info. It's just that from past and present experiences, i find that many products that are (MADE IN CHINA) have many 'POOR' standards of quality's. So this is my concern...@@cleversolarpower
You're comparisons are very skewed towards DIY. Premade is ready to run, where as you are not counting for Wires, fuses, kapton tape, and safe storage (case), etc.
Check the end of the video where I talk about this. I could have used cheaper BMS'es but didn't. The comparison is not skewed in any way. It's an objective view of the costs.
I can surmise that English isn't your strong point but in all fairness, NOBODY is BUILDING their own batteries. What you should be stating is building your own array of battery cells or packs and piecing together a BMS and other equipment needed to do the job of a prebuilt unit like a EG4 rack mount unit.
