Paying more =/= quality, unfortunately. Believe me, I wish it were otherwise. Don't be afraid to open up those battery banks now and then if you want to be sure, put a meter on them and scope them if you know how, but you'll find what I typically find; a lot of the same cheap components all wrapped in a pretty package. But because one came from China and one was "made" in the USA, you'll pay a lot more for one than you will the other. You can probably guess which.
I say that as someone who works in manufacturing as a controls and repair tech for industrial IoT and electromechanical integrations (I wear a lot of hats, long story). Trusted brands like Rockwell, Siemens, etc aren't really doing anything that much different than their cheaper competitors and they know it. It's a big part of the reason why their business model includes aggressive pushes to keep their customer "in their world," so to speak, trying to be a one-stop-shop for all their control needs when good number of applications really don't need anything beyond a Koyo Click PLC you can get used for $50 on eBay instead of the $1200 A/B unit. Heck, I've seen automation cells that could have the PLC swapped out with a $20 Arduino and nobody would know the difference except the controls guy. I'd love to say this over-priced cult-like hooey is restricted to the automation industry, but it's definitely not, and bleeds all over a variety of consumer industries, especially those of personal electronics. We are getting ripped off left and right, but if there's a fruit logo or some inventor's name we recognize on the packaging, we're okay taking out a second mortgage to afford it.
In the end, the quality standards in many cases are just a lot of hot air, CYA statements and sales BS. Price is really dictated by the customer's perception of the product, and when you create that trust, legitimate or not, you get to price your product much higher than your competitor, regardless if your product is _actually_ better than theirs. They get away with this because, for the most part, customers don't take the screws out and actually look inside.
Now, that is not to say my experience is always true. There are plenty of companies that make their quality standards and testing pretty transparent so the consumer can review them at their leisure and make a choice. I'm just saying most do not, which creates a lot of shadowy areas where many companies can get away with things simply because they know nobody is looking and taking their word at face value.