Looks like Princess Amy is looking for a replacement laptop after a battery death.
If it's cheaper to replace the battery do that, laptops aren't worth upgrading for small bumps in CPU and 8GB is still good for you, only reason to go 16GB is if you're using photoshop at high resolution or plan on using multiple compilers for various hard-core code projects and at that point you should be on a desktop.
In my personal opinion and experience, all PC laptops are utter shit and will break after 2 years unless you keep them on a desk for their entire lifetime, which most people do (although that defeats the point in a laptop, might as well get a more powerful desktop for less).
The only good laptops are Macs, which are expensive but they are very well built. Unfortunately compatibility is a deciding factor, so if you really want a PC laptop you're stuck with choosing which shit you'd rather put up with rather than quality.
Better off getting a replacement battery for now, especially at the spec increase you posted.
Oh and one final thing, whenever I do get a PC laptop I will always get one with a dedicated GPU, even a crappy dedicated GPU makes a laptop a better experience.
I got my current PC laptop mid-2012 for work, it actually started blue screening early December 2014. I had high hopes that it would be the first of my many laptops to last beyond 2 years.