Is this laptop's CMOS battery?

[waqasdanish]

http/s1.postimg.org/o204fiy1r/20150414_142259.jpg

My friend's laptop has gone bad and someone has suggested him to replace the motherboard part shown in above picture. Is this a CMOS battery or what? It contains a couple of 1.5 v batteries. Laptop is Toshiba Dynabook RX3 SM240E/3HD (Japanese Model).

Thanks in advance,
Regards.

 

[Im Spartacus]

If it came out of his laptop it does look like a CMOS battery? Why whats the issue.