Giant mobile phone manufacturer Nokia recently circulated a product advisory for the BL-5C battery that's being used on its phones because the said batteries are prone to overheating while charging.

Do take note that this is only applicable to the Nokia-branded 46 million BL-5C batteries that were manufactured by the company Matsushita Battery Industrial Co., Ltd. between the time period of December 2005 to November 2006.

Nokia employs other suppliers for the said kind of battery and advisory only applies to the ones from Matsushita. Nokia also announced that those who have the defective batteries are entitled to a free replacement.

The following instruction was provided by the company on how to spot Matsushita BL-5C batteries manufactured on the said time period:

On the reverse, the Nokia mark appears at the top and the battery identification number (consisting of 26 characters) is found at the bottom. Consumers should refer to this identification number to determine if their battery is among the batteries manufactured by Matsushita between December 2005 and November 2006.