You mentioned 150A.
Assuming you mean the BMS ?
If your talking about the MPP 2724 inverter - yes it needs more than 100A DC to support it's max output.
Per the manual it shows 123A required.
Would 2x12v 200A batteries.like this be ok ? Not sure of the 150A requirement except for charging quicker ?
VINNOTECH 12V 200Ah Lithium Battery with 200A BMS, 12V 400Ah/ 24V 200Ah LiFePO4 Batteries, Over 4000+ Deep Cycle, for Solar, Marine, Trolling Motor, RV, Off-Grid Appliances, 2 Pack
https://a.co/d/0bbbeXa
Costing out if this works wired in series
Or need true 24v battery
Or 5k server rack battery.
Seems battery would be 900-1200 depending on option
OR - DIY a battery
You mentioned 150A.
Assuming you mean the BMS ?
The inverter at peak output needs a supply side of at least 123A x 24v DC, so allowing for some losses I suggest you need about 150A x 24v DC from the battery. I noted this since a very common battery is going to be limited to just 100A and this will limit what the inverter can do, especially during any in-rush starting up things like motors. So "yes" the BMS needs to also be capable of 150A if you are using a single pack.
Panels maybe 3x200w used for $300 total and 600w
The MPP 2724 is limited to 800W PV for it's built in solar charge controller = 600W will work, be sure the voltage is more than the battery voltage.
That inverter you linked for $400 ....
Around $1800 ..... ?
Maybe you can find used or unboxed on line in your area to shave some off of the costs.
I really like DIY batteries but that is not for everyone.
Check out the thread on the forum where they post "the lowest price battery" options - seem these keep dropping, maybe you can do better.
Wills video is cool using the 5k rack cells and the lv6548v ... but at $3300 not sure what it's buying me except faster charge capability.
Also you mentioned resting electric draw ... and winter time. How do these solar units perform in winter/dark skies.....etc
But the MPP6548 is 48volt system and had double the output capacity of the 2724, and much higher PV input SCC. And, the 6548 is capable of parallel operation - ie adding more inverters to expand capacity. The MPP 2724 can't be set in parallel, so no expansion unless you change equipment, or run two side by side but not connected to each other.
My advice: think about what your goal is, and how much you want to spend right now. You may want to limit the spend and have a working system that is mobile enough to take with you camping, then the 2724 fits this idea. (It is like a low cost version of the "Solar Generators" DeltaPro/Ecoflo/Bluetti)
Or the goal may be to start a system that you can learn with as it grows, add more capacity over time (I did this) in which case the MPP2724 is not a good choice, since it doesn't allow parallel expansion.
{For larger capacity, expandable I am following 42Ohms in his thread on the SRNE 12k IP65, very interesting -note that this is a 10kW output, not 12}