It's generally better to buy a replacement from the original laptop maker than the cheapest compatible option from a third party. Replace your battery—if you can—if you see its capacity drop ...
If you had asked me a few years ago what I considered to be the weakness of modern smartphones compared to older phones, I'd have said the battery. When you look at phones from before modern ...
Whether you want a desktop replacement or a mighty micro ... of power available to the GPU to save on battery life and prevent overheating in some laptop cases, and this impacts performance.