Siva, yes it is. [http://www.youtube.com/watch?v=um3ncK4FonM|Here] and on [http://www.youtube.com/watch?v=n5DlnEherdY|Here as] well can you get some decent videos. Once you open it up, you should easily find the number for a replacement battery. Something [http://www.amazon.com/Oral-b-Triumph-Toothbrush-Replacement-Battery/dp/B008L303PU/ref=pd_sim_sbs_e_1|like this] should fit. Hope this helps, good luck.