Many tend to assume that their Macbook is simply just aging when they find out that the battery can only last an hour or so on a complete charge. However, that does not mean that the laptop itself is suffering from poor performance, as it may just need a new battery, which can easily be purchased in online and offline computer shops. Simply said, just because your battery is about to die does not mean that you need an entirely new Macbook. In fact, the Macbook internal components are made to last longer than the Macbook air battery powering.
Put Attention at the Charging Cycles
One good sign of whether or not your battery is on the edge of dying is putting attention at how many charging cycles it's taking. Before we move forward, it's important that you understand what a charging cycle is. One complete cycle is using up all of the battery power and then recharging it to full. That is considered one cycle. Also, if you use 50% of your battery and recharge it, and then repeat this the next day, that also counts as one cycle.
To find out how many cycles your battery has been through so far, go up to the Apple logo in the menu bar up in the top-left corner of the screen and click 'About this Mac'. Next, click on 'System report' and then select Power (in the left-hand sidebar). This will provide you a bunch of information about your Macbook's battery. Scroll down a little until you see 'Health information'. Under that you'll see 'Cycle counts'. If the number you see is close to the 1,000 mark, this means you will need to replace your battery soon.
How Much Does a New Macbook Air Battery Cost?
In most of the cases, when a battery needs to be replaced, the Macbook is out of warranty. In that case, you can buy a Macbook air battery for around $119 to $129 on specialized online stores or have it replaced in an Apple store.