X540YA-3F X540L X540SA-3G. X540SA-XX041D X540LJ-1A X540S. X540LJ X540LJ-3G X540LA. X540LJ-3F X540LJ-XX014T X540SA. Battery Type: Li-ion. 1.Li-Ion Laptop Battery 10.8V and 11.1V are in common use. 2.Li-Ion Laptop Battery 14.4V and 14.8V are in common use.