Coin cell with 2 solder pins. 3 Volt Lithium Battery. Fits models; Fujitsu LifeBook C25, Fujitsu LifeBook C340, Fujitsu LifeBook C342, Fujitsu LifeBook C345, Fujitsu LifeBook C350, Fujitsu LifeBook C352, Fujitsu LifeBook C353