FUJITSU -BT-1ST BATTERY (4 CELLS) 3490MAH 50WH

Fujitsu CP813266-XX is a replacement battery for compatible LIFEBOOK laptops. It provides portable power with a 4-cell design, making it suitable for use away from a mains connection when installed in a listed notebook model.

The battery is specified at 3490 mAh charge capacity and 50 Wh energy capacity. These figures describe its stored charge and energy; they identify the battery’s capacity without implying a particular runtime, which depends on the laptop and how it is used.

The listed compatible models include LIFEBOOK E548, E558, E448, E458, U748 and U758. The compatibility list also names LIFEBOOK T938, T939, U7410, U7510, E5510, E5410, E5511, E5411, E4511 and E4411. This gives a clear model reference for the battery’s intended use.