I've been running my van setup with a single 200W shadowflux panel since August this year. It handled everything just fine, charging my laptop, fridge, lights, even a small fan when it got hot. I barely had to think about power at all.

But lately the weather's been gray and rainy, and I've started to notice my battery sitting lower each night. Last time I camped up in the mountains for three cloudy days, and by the third morning, I was down to 40%. That got me thinking if it's this low now, what's it gonna be like when I need to run heating through winter?

So I'm trying to figure out what makes more sense: add another 200W panel, or invest in a bigger-capacity battery? I'm leaning toward more storage since sunlight's weaker in winter, but not sure if that's the smarter move. How do you guys keep power stable during the colder months? Do you just rely on extra solar, larger batteries, or bring a backup generator? Would love to hear what's worked for you.