Need Some Help, Please.

I replaced the battery in my C-Pilot remote about a month ago, well that battery went dead, I guess, so I put in a new one. That one lasted exactly two trips! Went by the battery barn here in good old Petersburg, VA today to get another new one, the previous two were off the drug store shelf, anyway, the guy checks it out.

He says yep, bad battery, only putting out 3V. I ask what should it be, his reply was 3.29 to 3.3. I am thinking yeah right, that little difference don't mean squat, at least to me!:D

Can that small difference in voltage render the remote useless? My next question is should I have "re-rembered" (or whatever it's called) the remote to the receiver? And if so, how, as I do not remember how I did it orginally 5 years ago and I cannot find the instructions.

Thanks in Advance - Howard V.