Unauthorized batterires are not subject to same testing as original ones, company says Three recent incidents of exploding Nokia Corp. phones are due to the use of counterfeit batteries, a Nokia spokeswoman in the U.S. said Thursday.Two Nokia users in the Netherlands and one in Vietnam were recently injured by exploding phones, and Nokia has learned that all three users installed counterfeit batteries manufactured by unauthorized suppliers, the spokeswoman said.Original cell phone batteries are available for between $24.95 and $74.95 through Nokia’s U.S. shopping Web site, but many companies or individuals sell illegally manufactured batteries for much cheaper than original batteries. Those batteries are not subject to the same quality control and testing that Nokia batteries undergo, the spokeswoman said. Nokia issued a press release in February about the hazards of using nonoriginal batteries. The Espoo, Finland, company cited incidents in Europe, Asia, and Africa where counterfeit batteries overheated, or nonoriginal cell phone chargers corrupted original batteries. Technology IndustrySmall and Medium Business