Lukey87

Another option that I use more and more is server racks. The same size rack as the steel ones that you buy for Pylontech, turns out to be up to 50% cheaper and they look 5 times better.  

Absolutely overpriced. I use a Samson equipment rack at a fraction of the cost of those cabinets. As the Pylons are standard rack-mount size, no need to buy special cabinets
Definitely the best choice 
Just one word of warning: Once you start down this path, you will eventually end up spending more money. You will get by with a single Pylon, but then it would be really nice to have a 2nd one to run a couple of extra things during loadshedding. And then, since you already have the inverter and Pylons, you might as well add a few PV panels to start banking savings from the inverter/Pylon investment that you have already made 😝

Little wall-mount 6u cabinets can be had for under 2k if you shop around a bit. I bought a massive 48u case with wheels for 1.5k (second hand) and stuck my entire system into it. I definitely support shopping around and making a plan, cause after all... it's standard 19" stuff.
Look on geewiz.co.za, to name just one alternative.

Hi all, I have been keen to get going witha proper back up system and as usual just got started with it and never really planned/ costed it out properly.
So i have installed new db so far and split the essential from non-essential loads. Essential loads is all lights (all LED globes), fridge, Tv and two routers.
Already have 1 x Kodak OGX 5.48 (5kw, 48v) ready to be installed.
So i was just quickly (haha) going to buy 2 or 3 x Pylontech US 3000's with a cabinet and be done, right? Well that idea came to a halt when i realised i would have to drain my kids college funds to make this purchase:)))
Please help me with a plan B? Do I go with 4 x AGMs in series? Will I need to further parallel these with another 4 x AGMs... buying Pylontechs just seemed so neat, safe, reliable and convenient, but not worth the money given other priorities I have.
PS. Its just backup power at this point. Have not planned for solar at this point.
 

I worked on 90% efficiency...
That is in the 3.9kw mentioned.