Just a quick question. What's the correct way to access the Mach 3 Sensitive Power razor's battery compartment? I know with the Fusion Power you just had to rotate the bottom of the handle to the left and it would come completely off, revealing the battery. But it doesn't look like the Mach 3 Sensitive has the same means of opening. Do you just pull down on the bottom until it pops off or what? I just don't want to break it. Thanks for any help.