CT40 Battery Pack, 4040mAh, for use with CT40 configurations with plastic battery latch button (last 2 digits in part number begin with 0: CT40-L*N-xxxxx0x). Also some CT40 SKUs will require operating system updates to ensure seamless use of the new battery pack. OS Build 83/84.00.17-(0148) and beyond support the new battery. Updated units will continue to be compatible with older batteries.
