It looks like the new MBP 15" Early 2009 battery fit the new MBP 15" Early 2010 battery.

MacBook Pro 15" Unibody (Mid 2009/2010) Battery

You'd better ask apple customer to confirm it.

And I find a site to buy this battery with cheaper price only $92.78 USD:

http://www.battery-center.net/apple-macb...

apple MacBook Pro 15 inch A1286 (2009 Battery Compatible Part No:

Apple A1321,

apple MacBook Pro 15 inch A1286 (2009 Battery Fits Machine Model:

Apple MacBook Pro 15" MB985CH/A battery,

Apple MacBook Pro 15" MB985 battery,

Apple MacBook Pro 15 inch A1286 (2009 Version) battery,

Apple MacBook Pro 15 inch MB985*/A battery,

Apple MacBook Pro 15 inch MB985CH/A battery,

Apple MacBook Pro 15 inch MB985J/A battery,

Apple MacBook Pro 15 inch MB985LL/A battery,

Apple MacBook Pro 15 inch MB985TA/A battery,

Apple MacBook Pro 15 inch MB985X/A battery,

Apple MacBook Pro 15 inch MB985ZP/A battery,

Apple MacBook Pro 15 inch MB986*/A battery,

Apple MacBook Pro 15 inch MB986CH/A battery,

Apple MacBook Pro 15 inch MB986J/A battery,

Apple MacBook Pro 15 inch MB986LL/A battery,

Apple MacBook Pro 15 inch MB986TA/A battery,

Apple MacBook Pro 15 inch MB986X/A battery,

Apple MacBook Pro 15 inch MB986ZP/A battery,

Apple MacBook Pro 15 inch MC118 battery,

Apple MacBook Pro 15 inch MC118*/A battery,

Apple MacBook Pro 15 inch MC118CH/A battery,

Apple MacBook Pro 15 inch MC118J/A battery,

Apple MacBook Pro 15 inch MC118LL/A battery,

Apple MacBook Pro 15 inch MC118TA/A battery,

Apple MacBook Pro 15 inch MC118X/A battery,

Apple MacBook Pro 15 inch MC118ZP/A battery,

Apple MacBook Pro 15 inch Precision Aluminum Unibody (2009 Version) battery,

If the part numbers match

they are compatible.

'''If this answer is acceptable please remember to return and mark it.

'''

Good Luck,

N.

Yes

The part numbers are identical (3ICP5/81/77-2). As machead says, this means that they are compatible.

they are two different batteries, from my research, the mid 2009 15" MBP has a 73-watt-hour non-removable lithium-polymer, and the mid 2010 15" MBP has a 77.5-watt-hour non-removable lithium-polymer. They appear to be the same size, but only question is will the mid 2009 MBP accept the 2010 battery and its larger capacity. If it is compatiable, i would get the 2010 battery hands down. I mean if your gonna pay the same price for battery replacement, might as well get the one with a slight more improvement. but knowing apple, they only want you to use the battery that it was sappose to use for.

The unibody composition also makes these new laptops easier to service and fix, and great for do-it-yourself types who, in the past, have lamented how difficult it was to do things like swap out the hard drive or battery. The redesigned MacBook Pro makes it very easy to access these particular components–just push the lever on the bottom of the case, and you’re in. Upgrading RAM, though, requires removing eight screws

http://www.applereviewed.net/tag/macbook...

Old battery with bad life,so you can change new battery.

<a href="http://www.thirdshopping.com/apple-macbo...>Apple MacBook pro 15 inch Battery</a>

http://www.thirdshopping.com/apple-macbo...