Pause Batch Render
 

Is there a way to pause batch rendering and then able to start it up again where you left off later?

If you are batch rendering frames 1-100 and you want to pause, just stop batch rendering altogether. You can check and see what the last frame rendered was by opening the file you were sending the frames to. Figure out what the last frame was (let's pretend it was frame 50), then when you restart the batch rendering, simply change the "Start frame" in the Render Globals window to 51 before you begin again.

If you were to exit out of Maya, reboot, then decided to render the rest of a sequence, you would have to make sure the project you are sending the rendered images to is loaded again, though.