I own a 13" mid-2012 MacBook Pro, and have been using it for over 7 years. I have replaced the HDD with a larger SSD, and upped the RAM to 8GB last year to improve its declining performance. However, I have done nothing to its original battery.
My battery over the years has underwent 2000+ cycles, and can only last at most 2-3 hrs from 100% to 0% currently (with no apps using significant energy). My 60W MagSafe 1 charger (L-shape) has had some parts of the outer cable torn (half of it covered in electrical tape). The cable has become more and more yellow, and the plugs are slightly bent out of shape, although it still works.
My questions are as follows:
How many years do you think the battery/charger of a MacBook Pro can last (mines is 7 years as of now)?
Should I look for replacements? If so, what should I replace in order to increase my MacBook Pro’s battery life?