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floyd's powercabinet
#1
My goals are to offset the mini split I installed this summer. Convert my 48 volt LA electric lawnmower to lithium(takes two 24v batteries). The charging of the power cabinet will be via solar panels. Since most of the hardware i have is 24 volt that will be what i am making the system. I have a 24 volt ul listed 1000 watt 110 inverter which I will be using as a UPS. hopefully will get my server on it soon.




image is of a harbor freight Hanging Tool Cabinet
I am still in the collecting and processing stage.
Have 200-250 cells maybe more that are good. Of which 70 will go to my electric mower.

later floyd
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#2
That's not a bad looking cabinet, didn't even realize they sold anything like that.
floydR likes this post
Off Grid Setup
3 - 320watt 24v Panels - MPPSolar 2424LV-MSX - 672 Cell 96p7s 5.5kw Power Wall

Retired pack 2kw 420 Cell

On Grid Setup
44 - 250 Watt Panels with Enphase micro inverters
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#3
Ok the cabinet has been ordered. The internal dimensions is aprox. 45 inches wide x 23 inches tall x 8 inches depth enough for a 7s80p would have to be creative if i went to 14s80p. there is enough room to make the packs 100p
Thanks AZ_Tekkie I thought it was nice looking when I saw it.
Hope it is not hard to put together.

later floyd
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#4
Update #2
The cabinet should be here by the middle of next week. After i see how hard it is to put together I may order one or two more. Depending on how much room I can configure the cabinet for I will see if I want to stick to 24 volt or move to 48 volts.
later floyd
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#5
(10-12-2017, 02:20 AM)floydR Wrote: Update #2
The cabinet should be here by the middle of next week. After i see how hard it is to put together I may order one or two more. Depending on how much room I can configure the cabinet for I will see if I want to stick to 24 volt or move to 48 volts.
later floyd

I like the idea of using a tool cabinet for the batteries but I'm not sure this one is strong enough? Does it say anything about rating of each shelf / whole cabinet anywhere?

If you put in a 7S80P you will have 560 cells and if we assume they weigh in around 45g each that give for a total weight of the 7S80P pack of 25.2kg or 55 pounds. And that's for the cells only, spacers ad busbars and other switchgear comes on top of that.

If you manage to squeeze in a 14S80P pack the numbers doubles to 50.4kg / 111 pounds.

a 14S100P pack will weigh 25% more.


If you're standing this on the floor then no worries at all but if you plan on stacking them or hanging them on a wall then I would be very concerned about strong the cabinets are and how many wall anchors they use to fasten them to the wall. It looks like there's only two eyes for securing them to the wall so they are probably not intended to hand the cabinet with but more to make sure that the cabinet doesn't topple over when stood on the ground.


I'm toying with the idea of mounting my powerwall on an external brick wall of my house above a flat roof over the garage, that way if / when they catch fire they won't burn by house down as there's nothing flammable below / near / above the spot where I want to hang them. The inverter and chargers will live in the garage straight below the battery box.

When I get enough cells that is... :-P
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#6
(10-12-2017, 09:31 AM)mormor1971 Wrote:
(10-12-2017, 02:20 AM)floydR Wrote: Update #2
The cabinet should be here by the middle of next week. After i see how hard it is to put together I may order one or two more. Depending on how much room I can configure the cabinet for I will see if I want to stick to 24 volt or move to 48 volts.
later floyd

I like the idea of using a tool cabinet for the batteries but I'm not sure this one is strong enough? Does it say anything about rating of each shelf / whole cabinet anywhere?

20 lbs per shelf, 3 compartments each with 2 shelves, 120 lbs (54.4kgs)
Plus i will be reinforcing the cabinet and shelves. if it isn't strong enough i will find an outdoor rated cabinet like you see in parks (irrigation controller, lighting control boxes). and i will have tool storage in my garage. Smile
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#7
Could always see if you can find a used electrical surplus place. I found one by me and picked up some 24"x24" steel electrical cabinets, they're super heavy gauge.
mormor1971 likes this post
Off Grid Setup
3 - 320watt 24v Panels - MPPSolar 2424LV-MSX - 672 Cell 96p7s 5.5kw Power Wall

Retired pack 2kw 420 Cell

On Grid Setup
44 - 250 Watt Panels with Enphase micro inverters
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#8
(10-13-2017, 05:31 AM)AZ_Tekkie Wrote: Could always see if you can find a used electrical surplus place.  I found one by me and picked up some 24"x24" steel electrical cabinets, they're super heavy gauge.

will look this weekend. i may end up with a tool cabinet for my tools, if i can find what I need.
later floyd
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#9
I received the hanging tool cabinet today,  Now I am too tired to put it together.  Worked in my garden.Will have to wait till tomorrow.

Looked at the local electronic surplus place for a  proper electrical box found at least one that would work. I was gonna ask the owner how much he wanted for it. But he was nowhere to be found. Couldn't have gotten it yesterday anyways.

Later floyd
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#10
The Cabinet is together think it will end up in the garage. It is ok for the price. and would have enough room for a 14s80p set up. so my search goes on.
later floyd
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