Do you use BL-5C battery type on your Nokia? Maybe Nokia E Series user not, but here is quotation from CNBC.com

Nokia said it plans to replace 46 million batteries used in its phones that could overheat for free, but it will continue to negotiate with battery maker Matsushita over who would bear the costs.
“Nokia has identified that in very rare cases the Nokia-branded BL-5C batteries…could potentially experience overheating initiated by a short circuit while charging, causing the battery to dislodge,” it said in a statement on Tuesday.
The world’s top cellphone maker said about 100 such incidents had been reported globally but no serious injuries or property damage had been reported.
It said it was working closely with Matsushita Electric Industrial Co. Ltd., who made the batteries in question between December 2005 and November 2006, to investigate the problem.
Nokia said replacing millions of batteries would have some financial impact, but Matsushita would pay part of the costs. Analyst Richard Windsor of Nomura estimated the cost to Nokia at a maximum of 100 million euros ($137 million).
The “BL-5C” is Nokia’s most widely used battery, powering among others low-end 1100 series phones and multimedia handsets N70 and N91. Several suppliers have made a total of more than 300 million of them for Nokia.

“By reacting swiftly and responsibly, and by being fully transparent, we believe that consumers will continue to view Nokia as a responsible and trustworthy brand,” Robert Andersson, head of customer and market operations at Nokia told Reuters. Matsushita said there had been a rare problem in the manufacturing process rather than in the design of the batteries. It said the effect on its earnings was uncertain.

“We are still in discussion with Nokia about how to divide the replacement cost,” said Matsushita spokesman Akira Kadota. Marianne Holmlund, spokeswoman for Nokia, said in similar cases in the car industry less than half of consumers eligible for replacement had used the option.