Why doesn't Apple offer...

[TSE]

An external battery as an option? There are a couple of other PC Notebook companies that offer external batteries with around 3000-4000 mAHs that connect via the power source, and sometimes even through USB or eSATA. They could charge $99 for one of these badboys and I am sure they would sell well.

 

[PeterQC]

They don't want?

There are already 3rd party solutions?

There are already spare Batteries that can be easily and painlessly put in place?

 

[kastenbrust]

You can buy them from 3rd party companies but they cost at least $250 each going up to $500.

http://www.batterygeek.net/SearchResults.asp?Cat=78

These companies however illegaly use the Magasfe adaptor as Apple doesn't license it to anyone other than themselves, and they get these Magsafe adaptor heads by ripping them off broken Magsafe cords and Magsafe adaptors sent for recycling etc so I wouldn't buy one.

 

[smurfjammer]

Also if the 17" MacBook Pro is anything to go by, Apple might get rid of removable batteries all together.

 

[nuckinfutz]

Because not enough people buy them to justify the effort.

Once batteries started hitting 4-5hrs of battery life the need for toting around extra batteries diminished quickly.