When it needs it?
Just follow the instructions Apple gave for your model. If you don't know then go to Apples support site and search for your model and it will give you full instructions. There are certain things your supposed to do as far as letting it discharge all the way and the frequency your supposed to do it. It seems every model year is different with the new battery technology's.
If you have a new macbook pro with the metal body case, no. If you have an older macbook pro, you can use a coin to turn the lock on the bottom of the laptop to remove the battery.
According to Apple, you should be able to get around 1000 battery cycles out of your Macbook Pro before the battery will need to be replaced. This comes down to 5 years of normal battery usage. However, over time, the battery's capacity will significantly diminish.
you probably should get the MacBook. they are cheaper than the MacBook Pro. now, if you want a bigger screen, then get a MacBook Pro.
Macbook air
No
A lithium ion battery installed at the factory that cannot be replaced by the user.
The MacBook Pro has a 95-watt-hour lithium-polymer battery. This is a measure of how much power is available in the battery. There are many ways to use the MacBook Pro. Each function uses power. The fewer functions you use, the longer the battery charge will last. The more functions you use, the faster the battery is drained. Watching a movie takes more power that writing in a word processor. Apple suggests about a 7 hour use is possible, but it all depends on what you are doing. If you mulit-task, you won't get 7 hours of battery charge. Lithium polymer batteries need to be charged regularly. If left unattended for months they will loose their ability to be recharged fully if at all.
To extend the life of your battery for Apple Macbook Pro is to unplug the laptop and use it to run the battery down then recharge it. Apple does not recommend keeping your laptop plugged in continously as this can ruin your battery. Read more about this at http://www.apple.com/batteries/notebooks.htm
For Reset MacBook Pro, you should follow right way If I will tell here, it will be so long So, I am giving a full information for Reset MacBook Pro So that you can Reset MacBook Pro Easily Go to Search Engine And search "Reset MacBook Pro The Vivant"
MacBook Pro is the best you can get
After discovering that your Apple MacBook Pro won't turn on when you plug the charger in and the battery life isn't appearing on the side, it may be safe to assume you need a new battery.
Macbook pro is better than macbook air. Although it is heavier but it has better screen quality and the screen is made out of glass. if you are tight on money, i would suggest u to get and 11 inch macbook air, if not get a macbook pro which is $9088 (Hk dollars) Or even better ones that are listed in apple.com. Alright, last thing. Macbook pro has a better battery life. It can be used up to 7-10 hours for 13-15 inch. But for 17 inch it is only 5-7 hours. Air sucks, and pro rocks! You guys should listen to me, cause once you get an air. You will regret.