It's a shit handheld. Battery life is absolute garbage. That on top of it being a weak console and you got yourself a system that can do a lot but nothing particularly well. Im a handheld enthusiast. But I cannot recommend something that can barely go further than the Wii U gamepad without a charge. 3-4hrs is fucking sad. The Switch is a decent idea but poorly executed. It'll continue to be a fucking pathetic excuse of a handheld until it can last at least 8hrs without a charge. As for the console part, there are better options. I have my PS4 and PC for games on my TV. I'd only use it as a handheld. But since it fails at even that, it really has no use until they fix the battery. And no, I won't buy a 3rd party battery to make it work the way it was intended.
God, I hope you didn't buy a 3DS or Vita, then. Most cellphones don't even get that much time if you're actually using them. Who the hell regularly plays eight hours of video games a day period, let alone eight hours away from an outlet?