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Sony Corporation has recently learned that "InfoLithium Battery Packs" (models: NP-F750 and NP-F550) manufactured from March 1999 to June 1999 may potentially be affected by a quality problem. Sony has discovered that some of these battery packs become overheated while being recharged. Although a rare occurrence, this overheating can lead to a deformation of the exterior casing of the battery pack. Contact with the overheated area of the battery pack should be avoided as it may cause burns to human skin.
If you are in possession of any of the above battery pack models, please contact Sony Corporation immediately on the following toll-free number and we will exchange them for new battery packs free of charge. We sincerely regret any inconvenience we may have caused our customers, and we will make the utmost effort to enhance our quality assurance programs in the future. We thank you for your understanding and prompt cooperation.
Please check the third and fourth digits of the five-digit numbers on the battery pack. (see the figure below):
NP-F750 9C 9D 9E 9F
NP-F550 9D 9E 9F
Sony InfoLithium Battery Pack (ILB) Call Center
0120-556-355 (9:00 - 18:00)
Sony Products in which InfoLitium Battery Packs (NP-F750, NP-F550) can be used