Ron, yes, it can be done on a budget. I wouldnt try to shoehorn so badly that battery and distribution enclosures, conduit, cable trays, are omitted, though!
Nice components, dude, those charge control breakers!!!?
One thing about solar. Diy home brew to safely get by and commercial electrical are two opposite ends of the scale.
A telecom site is not the place to show
people how cheap it can be done.
Goldrush ideology in solar installations has ruined the industry in the past,
think solar air and
water heater craze, where evey high pressure sales team fed jobs to unqualified persons to litter the field with lackluster systems and no support.
My two cents on the telecom install, although i have done much the same for non paying people with very low budgets. Those breakers are trouble if they are hanging by wire the terminals, as it appears in the photo. Din rail at a minimum is quite cheap and a quad breaker midnite baby box ($20!)or even a minidc enclosure ($180) is a godsend. Clean and safe. No worries about bumping stuff and critters munching the insulators and such.
The battery cable lug crimps are flat? Strange. Also, it is not a good tactic, to pile all those lugs together, better a battery bus, or other distribution. And... sorry, i never like critisism either, but it helps the craft.
ATO/automotive fusing is only good to 36v, so 24v nominal and is not code compliant.
i am aware that code may not be used in some installs, telecom, industrial utility electric systems and agricultural, but operating out of spec for equipment and materials is not safe and generally not reliable.
Battery main overcurrent protection, its important and appears to be missing, a commonality im afraid.
Charge control battery circuits fail shorted on... if a controller relay fails it will short battery positive and negative inside the control enclosure, only rated 60 amps or so. This means zorch equals fire, as curren at battery short can be spectacular amperages and will weld and could then catch that particle board on fire or ignite wire insulation as a fuel source to spread.
Point to point spaghetti wiring on the wall is not recommended either, it is not supported or protected.
We did 4g server installs for general dynamics at cell towers all over the state and, whoa talk about specifications! CYA with video, photos and from every angle, on every step from walking to the gate to a photo of a locked/secured perimeter behind...cad welded grounding networks, double crimps, printed labels on all conductors and terminal areas, enclosures, stainless steel wool and duct seal for openings in conduit and penetrations for pest protection, etc.
The project may be incomplete and just set up to get the power on, so dont take it harshly, as i know it is possibly the case.