OffGridForGood
Catch, make or grow everything you can.
I have been following along that thread for over a year now, ordered some parts for the comms for the JK.
{+1 for the JK BMS = it just works!}
Who is still building DIY batteries
- Thread starter JJJJ
- Start date
{+1 for the JK BMS = it just works!}
houseofancients
Solar Wizard
houseofancients
Solar Wizard
they were
Envisions grade a are now , as they are cheaper, perform the same or better , i can get them locally ( 30 minute drive) , and are the exact same dimentions , so they fit the seplos mason boxes i use exclusively
PreppenWolf
Solar Wizard
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- Oct 10, 2022
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There is no other way I could have built my 104kWh bank for $12k.
If I could buy battery storage at 10kWh/$1k I would stop building.
If I could buy battery storage at 10kWh/$1k I would stop building.
houseofancients
Solar Wizard
bought mine at Nkon ( the netherlands - out of stock now ) , and i know fogstart (UK) has also been selling the grade b's
RV10flyer
Solar Wizard
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The first diy 100kWh with JK BMS’s $17.5k from Aliblabla. Try over $30k and no repair-ability if you go with SS, with about the same warranty and customer service.
PreppenWolf
Solar Wizard
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- Oct 10, 2022
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I'm using BYD semi-blade EV heavy truck cells. They are seconds from production lines. Monitored by Overkill BMSs.
I keep looking at the newer BYD full blades for a smaller system to separate my house/garage which are on a single system right now, but I honestly might grab one of those Hysolis Apollo 5k all in one units Will just reviewed for my new cabin to have something portable that I can throw into my camper and make it dual purpose.
I keep looking at the newer BYD full blades for a smaller system to separate my house/garage which are on a single system right now, but I honestly might grab one of those Hysolis Apollo 5k all in one units Will just reviewed for my new cabin to have something portable that I can throw into my camper and make it dual purpose.
cs1234
Solar Wizard
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- May 9, 2022
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That UL cert costs some bucks!
RV10flyer
Solar Wizard
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…and a steel case. I guess. Mine even have a 125A Class T between cell 8 & 9. I get to look at all busbars and cells…definitely not for everyone, especially if you like dropping tools, chains, wires on top of batteries by accident.
cs1234
Solar Wizard
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I have a container full of random screws and bolts and such, as I'm sure we all do. I was messing with it on a shelf in the garage and I accidentally knocked it over on top of a bunch of my 24vdc lifepo4 batteries on another shelf.. talk about an "aw shoot" moment. Good thing those batteries were just 24vdc or there might have been some good arcing with how some of those big bolts landed. ?
This is one of my fixtures. It contains two 8s batteries which are separated from each other. There is a section of hardiboard between the two batteries. Each cell is insulated from each other. The positive end connects to a custom made pure copper bus bar that then connects the the main positive line which is fused. There is a power switch for each battery. The negative line feeds to the Bms. There is hardiboard underneath each battery.
Rednecktek
Solar Wizard
He.. he.. heh... 
Teaser...
Teaser...
RV10flyer
Solar Wizard
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Good idea. I bought a 1, 2”, 4” and 8” roll of high temp polyamide tape. I cover bus bars to prevent tie wrapped balance wires from shorting against them, then cover entire battery. It’s really just to protect from small hand tools and cans of screws.
MrM1
I'm Here, But I'm Not All There
DIY for me.
I am on my 7th build. I need cells. Where is anyone going these days? I was using Docan a couple years ago for my last build. I read some not so great stuff now.
Who's reputable now? I'd prefer to avoid Ali baba. ?
I also want to build in a steel box this time with included bms or at least space for my own. Where/what are good boxes? Seplos Mason? Are those bms OK? Other?
I am on my 7th build. I need cells. Where is anyone going these days? I was using Docan a couple years ago for my last build. I read some not so great stuff now.
Who's reputable now? I'd prefer to avoid Ali baba. ?
I also want to build in a steel box this time with included bms or at least space for my own. Where/what are good boxes? Seplos Mason? Are those bms OK? Other?
houseofancients
Solar Wizard
docan is selling a rebadge ( with us stock) of the Seplos Mason's , if wanted prefilled with their cells....
hear good things about 18650 , as an alternative for the exuberant shipping fees that seplos charges, send you a PM
RV10flyer
Solar Wizard
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James at 18650 always sends a nice container of grade A 304 cells. No top balancing needed. My JK BMS takes care of that on two charge/discharge cycles.
Nobodybusiness
Solar Sponge.
Honestly 18650 is probably your best shot these days.
Competitive prices, US stock, hear good things.
Beats waiting for 2-4 months on slow boat from China with your mystery gift.
At least 18650 is stateside and if any issues happen they would hopefully get resolved faster even if shipping involved.
If I buy cells again it would be from them.
Quattrohead
Solar Wizard
I can't get any reply from 18650 battery at all, anyone got a better contact method than their website or number that they never answer?
timselectric
If I can do it, you can do it.
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- Feb 5, 2022
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So far I have purchased 80 LF280K cells from 18650batterystore. Only 256 more to go.
Very satisfied customer.
Very satisfied customer.
timselectric
If I can do it, you can do it.
- Joined
- Feb 5, 2022
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- 20,095
Once I made my purchases, I received a text and an email. I don't remember if I actually talked to anyone on the phone.
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