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Mike's DIY Battery Shed
#1
I decided I would start a new thread here for my project considering how much it has changed since I first began and most of the information in the old thread was very outdated. It's been quite a while since I posted any updates, so I'll just start with where I'm at now.

When I first started this project, I wasn't sure how far it would go. I started with batteries on plywood outside covered with a tarp to protect from weather. This worked great but was not sustainable. The tarp started to rot from the sun and I quickly needed room to expand.


The next summer, I set out to construct a battery shed where I install the batteries and all related equipment.


The shed was completed in the summer of 2017. I didn't take many pictures unfortunately. A few weeks ago, I purchased 15 brand new 270w solar panels at a huge discount because the installer was no longer using 270w and moved to 300w+. His loss, my win.


Going forward, my packs will be 300p packs containing new "old stock" 2600mAh cells. Each 300p block contains 230 Samsung cells and 70 Sanyo cells. I am using 8 gauge stranded wire for the busbars with a 0 gauge lug hydraulically crimped twice. For the BMS, I am using the Batrium system.
 

Now, to catch up... Today, I removed everything, including all 28 120p packs, charge controller, inverter, all wiring, etc, from my battery shed in preparation for the 300p packs. I have 12 made and only need to solder 2 more. I'm finally working on insulation all of the walls and expect to have it completed tomorrow. My shelving units being used for the batteries are also being delivered tomorrow.


I will make a better attempt to post more frequent updates going forward Smile
Wobbleszo, Solexx X, Learjet And 2 others like this post
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#2
Wow, kewl! A truck came with the SunEdison! Sweet! Tongue
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#3
(03-30-2018, 11:33 PM)Korishan Wrote: Wow, kewl!  A truck came with the SunEdison! Sweet!  Tongue

That be my truck. I had to drive 2hrs to get them. Lol.
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#4
looking good mike!
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#5
All 28 of the old 120p packs were removed. 14 of them will be going back in. Of the remaining 14, some will be broken down and a few of the older packs given away to someone who has expressed interest.


Upon removing the old packs, I discovered this one with what appears to be a cell that began leaking. I'm guessing it got hot and built up some pressure internally. More testing will be done on this cell later...


The AIMS 10kw inverter is installed. I used doubled-up 2x4 in the walls then 2x6 across the front. The support seems solid. Yes, it is installed level even though the picture's angle makes it seem sideways. Lol
hbpowerwall, Solexx X, wim like this post
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#6
Not concerned for the inverter ... but, will the rack hold up ?? You have some serious bad a** packs...
300p !!! dang, still not over it. Smile
Crimp Daddy likes this post
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#7
Truck bed full of cool hobby stuff is always a beautiful sight.
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#8
(04-02-2018, 03:50 PM)wim Wrote: Not concerned for the inverter ... but, will the rack hold up ?? You have some serious bad a** packs...
300p !!! dang, still not over it. Smile

I hope so. They're NSF-certified for 350lbs per shelf. I'll only have 280lbs on each shelf.
Fully-Tested 2001-2200mAh Cells, $1.35 each!
^ Use coupon code "powerwalls" on checkout for a 10% discount!
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#9


I love not having to hunt for batteries anymore. One of the usual shops called me up and let me know they had a bin full. I got 92lbs of laptop batteries for $40. That's $0.43/lb Smile
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#10


First shelf is filled! Getting close. I just need to solder the 14th pack and add longmons to packs 10-13.
rodagaster, tebeve, Daniel Ramsay And 1 others like this post
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