I have a gently used 276c with BlueChart Americas Version 9.0, Marine Mounting Bracket, Car Power Cable, AC Power Adapter, Spare Power Cable (used for mounting in boat), USB Cable and all documentation and manuals. I used this for 3 seasons with no issues. New boat came with C80 so it went to storage. I have upgraded to the latest version of firmware. The battery is not holding a charge but found many replacements for $20.00 - $30.00.
Will sell for $350.00 including Ground UPS shipping.
Let me know if you have any questions