Minimalist Solar Package but with DC to DC

[Photorectoby]

This setup is perfect for my needs https://www.mobile-solarpower.com/the-minimalist-great-for-small-vans-and-cars.html but I think I want to switch the MPPT for one that also does the DC TO DC - probably the renogy(https://www.renogy.com/dcc30s-12v-30a-dual-input-dc-dc-on-board-battery-charger-with-mppt/) and charge off the alternator in my Honda Odyssey and I might add one more battery to that setup. Anything I need to be aware of as an almost complete beginner? So far I have been using a solar panel to charge my Ecoflow River Pro which keeps my laptop and a small fridge going for short trips but looking at longer off grid stays in the van. Appreciate the help and love Will's YT channel!

Thanks!

 

[MisterSandals]

Anything I need to be aware of as an almost complete beginner?

This is the biggest feature weakness of the DCC30:

>Solar Panel Maximum Open Circuit Voltage (≤25V)

Just be sure your panel(s) stay below this with the temp compensated Voc.
200W seems pretty low for your list of things you want to power. Check the watts and runtimes to get Wh prepay.

200W x 5h solar (or what you get at each season) = 1000Wh per day.

 

[fratermus]

Anything I need to be aware of as an almost complete beginner?

The specs of the linked panels include:

Maximum Power Voltage(Vmp): 20.4V
Open Circuit Voltage(Voc): 24.3V

.... which is perilously close to the linked controller's 25v input limit. I would look for panels with a lower Vmp/Voc or use a controller with higher input limits.

Seattle isn't known for epic solar harvest. 200w of flat-mounted panel would average:

Month    Avg Daily Wh
Jan    87
Feb    153
Mar    236
Apr    387
May    490
Jun    502
Jul    528
Aug    488
Sep    320
Oct    183
Nov    93
Dec    71

The linked controller could handle 400w of panel, which might prove more practical.