SERIOUSLY, don't bother trying to peel up the copper tape. Just cut it, and replace with new tape. Much easier than trying to detach the old and new batteries from their backings.

SERIOUSLY, you guys need to add a step to unplug the red and black wires, and then detach them from the battery cover!

Help. During our removal of the battery, the red and black wires that run along the long edge of the battery pulled free of their plug. Now we can't get them reattached. Not sure about polarity either.