Apple Computer has initiated a voluntary recall for some of its <A HREF="http://news.zdnet.com/2100-9584_22-6100251.html">15-inch MacBook Pro batteries,</A> citing performance concerns with the rechargeable batteries. Under its free Battery Exchange Program, Apple will replace the batteries for 15-inch MacBook Pro systems sold between February and May 2006. The batteries do not pose a safety hazard, so customers are allowed to use them until their replacements arrive.