Batchelor, has moved up the A1 to premier division Grantham Town, the club he left to rejoin the Daniels in November 2015.
Robbins also moves up a division as he rejoins Coalville Town. Ryan reached the FA Vase final in 2011 with the Ravens.
Manager Graham Drury wished both players well with their new clubs and thanked them for their efforts with Stamford.