... PC TC4200 Series Advantage:We are professional manufacturer of laptop batteries and adapters for all major brands laptops ... Fujitsu, IBM, Liteon, Sony, Toshiba, Asus, HP, Gericom, Mitac, Medion, Gateway etc.Some unique characteristics of batteries:1) 100% compatiblity ... protection. 3) Smart Automatic Tester quickly and conveniently tests laptop batteries for all models. 4) Individual Quality Control ...