Three phone models (two by Casio, one by Hitachi) will be replacing their Sony-made batteries with KDDI Corp. batteries, the second-largest mobile phone operator in Japan. This is due to concerns about the batteries overheating.

Sony, a giant in consumer electronics, has had several recalls over the years, including several years in a row (starting 2006) of Dell laptop batteries. They're also known for their recent issues this past year revolving around computer hacks made against the company.

The phones in question were sold between 2007 and 2009. There have been customer complaints in both 2010 and 2011 of the batteries overheating, which may result in the battery melting.

While a change of batteries in three handheld electronic phones may not have a large effect on the company's monetary standing, it could definitely affect their reputation.

Source: businessweek