I cannot be alone in my amazement of this mod. The creator essentially gutted his old Logitech mouse to hold a Nokia Li-ion instead of two AA batteries. That required some Dremel persuasion along with creating new battery contacts on both the battery and the mouse. The only thing missing now is a convenient way to recharge the battery besides popping it out of the mouse. The whole tutural is up on Instructiables but you’re probably better off going about this on your own unless you have the same hardware and equipment. [via HackADay]