EastTexCowboy
Solar Wizard
Which JK BMS do you use? The 200A?Whenever I get time to work on it again. I'll start posting pictures again.
Which JK BMS do you use? The 200A?Whenever I get time to work on it again. I'll start posting pictures again.
$1700 + $325.00 shipping + taxesEG4 Lifepower4 server rack batteries.
$1,499 plus tax.$1700 + $325.00 shipping + taxes
YupWhich JK BMS do you use? The 200A?
I have been "building" my system for about two years, give or take. Basically save up some $$$, make a purchase, repeat...I applaud you for how you've built such a monster system without breaking the bank
Torque it 'till it breaks and back off 1/4 turn, perfect torque every time. ?Everyone has their own priorities, etc. Of course I'm still gonna buy all the tools because, well, I mean, you GOTTA have tools!
Speaking of which, I finally broke down and ordered a torque wrench because I couldn't find mine and I didn't want to endure more nagging about my redneck armstrong torquing procedures. ?
I’ve always been a DIY kinda guy; like to tinker with things, especially when it can save me money. So when I saw threads here about building battery banks from cells, I was intrigued. Have read a lot, checked on pricing, but must be missing something.
It looks like 16 cells needed to build a 5 KWH battery would cost me well over $2,000. Add to that a bms, some wiring/cabling, breaker, and maybe a case. But I can buy a 5 kWh unit for under $1,800 that includes everything above, plus a warranty. And places like Sig Solar will throw in a rack/cabinet if you buy several batts.
Someone please help me see what I’m missing in the cost-benefit comparison between buying and building a 5 kWh pack.
Clear glass or plexiglass or polycarbonate please. Can't block that view!It will be a shame putting the doors on it and closing it up.
Every time I see that picture I get a little jealous, ambitious and eager to order more cells. Very nice work.Because it doesn't look pretty like this?
View attachment 138762
It will be a shame putting the doors on it and closing it up.
Anyway, as for cost. https://diysolarforum.com/threads/a...ut-ahead-going-full-offgrid.53943/post-701875
Now take the EG4-LL and use the same cycle count of 6000 cycles, and 5.12 Kwh and 90% capacity. Comes to $1700 plus shipping and tax comes to $2006.10 to my door.
5.12Kwh x .90= 4.6Kwh
$2006.10 divided by 4.6Kwh = $436.11 per Kwh
$436.11 divided by 6000 =$0.07268 per Kwh over the expected life cycle of the battery
My bank was $0.0264 per Kwh over the expected life cycle of the battery. The cost of the EG4-LL is 2.75 times the cost per Kwh for the DIY bank I have.
If you went to the one grocery store and they had 10lbs of sugar at 2.75 times the price of 10 lbs of sugar at another grocery store, which one would buy it from?
Which JK BMS do you use? The 200A?
18650batterystore has them, now.Yup
B2A20S20P
Building batteries with 18650 cells is a lot of work.Building a battery pack sounds much more fun than a grid tie solar!
Do you have wiring diagram, or something that can get me started?
What size of battery pack can I build with 100 18650s and a single 455W panel? I’d like to build a small system just for the fun part and may be to charge some garage tools!
Thanks