How to make Macbook Pro battery last longer?

Question

So I just got my new Macbook Pro last night. One thing I'm really scared about is my battery life. With my Windows PC, my battery was just messed up. I couldn't take it off the charger without it dieing in two minutes. When I got that computer, I didn't think that keeping it plugged up all the time would damage the battery. WELL, I know never to keep a charger plugged to a laptop longer than it's needed.

I'm so afraid to mess up the battery on this Macbook Pro. It's not a removable battery, so I can't easily replace it myself, and I definitely don't want to pay the price to get it replaced. When I got my Mac, I used it out of the box (it was charged to 80%). The battery life was decent. I didn't plug it up until it got to around 18%. Then I plugged it up and continued using it. It reached 100% in only like two and a half hours. Is that right? It didn't seem right to me. But anyways, right after I saw it was fully charged, I unplugged the charger, and almost immediately the percentage dropped down to 98%. For as long as I've been typing this it has dropped down to 94%. Should I be worried? What can I do to make sure my battery doesn't mess up?

My dad paid a lot of money for this, and I'm just so scared that the battery would mess up if I don't charge it the right way.

Answer 1

This isn't to do with the battery. MacBook batteries are quite clever - they guess how much battery your MacBook has judging by what you're using and how many pages you're flicking through, your brightness, whether bluetooth or wifi are on and everything else. Don't worry about the battery falling by this - it always happens. My MacBook currently says I have 2 hours 40 left, which is right, but this is apparently only 30% left. It judges by what you're using.

Don't pay too much attention to this - only plug your macbook in when you're at 1% left, really running out! Don't plug it in when you still have at least 10% battery left.

MacBooks charge in about 2 hours, and last up to 14 hours. (this would be on low lighting and low energy)

It's fine - even replacing the battery does not cost much.

I've owned MacBooks for years and haven't had any problems.

Don't plug in your MacBook until you really have to, and don't leave it charging for too long.

MacBook chargers turn themselves down when the laptop is done charging, so don't worry about it being plugged in for 9-10 hours. It dims the power it is putting into your laptop so it doesn't damage it.

Your battery is dropping because you have wifi on, your brightness is up, your location services and bluetooth may also be on. It will drop quicker when you have these things on.

Answer 2

As long as you don't let it overheat (say by leaving it in a car in the Sun), it will last a long time almost no matter what you do. The other thing to avoid is leaving it dead for months at a time. Otherwise, battery longevity is basically not affected by what you do, and I recommend leaving it plugged in whenever possible so that it will be fully charged when you need it. Much of the advice you see floating around is based on the quirks of older battery technologies. Modern rechargeable Lithium ion batteries connected to modern chargers don't suffer charge depletion, memory, overcharging, or other problems. Don't leave the battery in the Sun. Don't leave the battery dead for days. And if you need to store the battery without using it, it's best to fully charge it, use it to about half charge, and then store it. Otherwise, how much life you get is up to the luck of the draw.



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Answer 3

Just two simple rules:

- Don't charge when your battery is full or near full.

- Don't start charging until your battery is near empty, if this is possible.



Charging when your battery is full won't do your battery good and it's better to actually use all the charge your battery holds once in a while. I've never done this with my laptop, and my battery sure is screwed up now.