Batth's equaliser edges the Potters closer to survival after Filip Benkovic had put the hosts in front in first-half added time.
Story of the match
Diedhou's early let off
The hosts struggled to get going early on and almost found themselves a man down after 18 minutes.
Forward Famara Diedhou collided late with Stoke centre half James Chester and appeared to show studs as he made the challenge but referee James Linington awarded only a free-kick.
Benkovic curls in opener
Stoke boss Michael O'Neill should have been happy with his side's performance going into the half-time break but was left frustrated as they went behind just seconds before the whistle.
After seeing their initial effort from a corner cleared, defender Benkovic reacted first on the edge of the area and saw his shot curl into the far corner via a deflection.
Woodwork denies Powell
The Potters started well after the break and were almost level just before the hour as they searched for an equaliser.
Flicked through on goal by Lee Gregory, midfielder Nick Powell fired low towards the far corner but was denied only by the post.
Batth heads Stoke level
Stoke continued to push for an equaliser throughout the second half and were rewarded for their efforts on 64 minutes.
Man of the Match: Danny Batth
The Potters defender was vital to much of his side's defensive work as they edged closer to Championship survival.
Registering the all-important equaliser, Batth could have had a second late on but was denied after Bentley tipped his looping header onto the crossbar.
Bentley, Benkovic, Baker (Vyner, 26') Kalas, Hunt (Eliasson, 76') Patterson, Smith, DaSilva, Weimann (O'Dowda, 84') Wells, Diedhou
Unused subs: Wollacott, Nagy, Watkins, Hinds, Rowe, Massengo
Davies, Smith, Batth, Chester, Martins Indi, Clucas (Collins, 90+3') Cousins, Powell (Thompson, 76') McClean, Vokes, Gregory (Campbell, 81')
Unused subs: Noukeu, Ward, Ince, Oakley-Boothe, Sorensen, Tymon
Play-off hopes over?
Even with a win, the hopes of making the playoffs seemed a stretch for Bristol City but this all but confirms it.
The result leaves the Robins five points below Cardiff City who occupy the final play-off place in sixth with two games to play and would require a surprising set of results for a chance of promotion.
Stoke almost there
An impressive result sees the Potters reach 50 points and move closer to Championship survival.
But with a superior goal difference to all of the current bottom three, it would take a major collapse for them to be dragged back into contention.