Nokia BL-4U Battery is an internal battery used for certain Nokia mobile phones.

Nokia BL-4U Internal battery is a Lithium Ion (Li-Ion) based battery which provides power in a thin and light package.

Nokia BL-4U battery is compatible with some Nokia mobile phones. To check the model of battery that your phone uses, either open the back cover and read the model number.

This battery is compatible with the Nokia: 3120 Classic, 6212 Classic, 6600 Slide, 8800 Arte, E66.