A:AnswerJust use a butter knife to gently pry between the “+” side of the battery and the inner housing of the battery cage and push toward the “-“ Sid of the battery compressing the spring and then just gently pull toward you once the “+” side of the battery has cleared the housing. Free Willy!!
A:AnswerMice are generic devices, for the most part. Microsoft, HP, Logitech, etc - doesn't matter what brand it is, functionality is pretty much identical.