Apple is recalling some laptop batteries manufactured by Sony.  From Apple's web site:

Apple has determined that certain lithium-ion batteries containing cells manufactured by Sony Corporation of Japan pose a safety risk that may result in overheating under rare circumstances.

The affected batteries were sold worldwide from October 2003 through August 2006 for use with the following notebook computers: 12-inch iBook G4, 12-inch PowerBook G4 and 15-inch PowerBook G4.

Apple is voluntarily recalling the affected batteries and has initiated a worldwide exchange program to provide eligible customers with a new replacement battery, free of charge. This program is being conducted in cooperation with the U.S. Consumer Product Safety Commission (CPSC) and other international safety authorities.

To determine if your iBook or PowerBook battery is being recalled, and to request replacement, please see Apple's battery exchange web site:

 http://support.apple.com/ibook_powerbook/batteryexchange/

Apple Authorized Service Providers, such as the UVM Computer Depot, are not able to replace affected batteries under the recall.  We apologize for any inconvenience.

The new MacBook laptops do not have the same batteries and so are not affected by this recall.  There is a recall on batteries in some MacBook Pro 15-inch laptops, though these do not pose a fire hazard.  For more info on that recall, please see https://support.apple.com/macbookpro15/batteryexchange/index.html.