battery grounding out

A Carquest in Jackson, MS finally was able to produce a rubber wedge shaped clamp that screw into the battery plate. I got it on but after leaving found that it was not tight enough to keep the battery from sliding. I drove it the 100 miles home when I stopped at a station and moved the battery again it did not want to start but finally did and made it home. I will fix the clamp but I want to kow if that could have damaged something that would cause me problems.
Any knowledge about this issue you can share will be appreciated.
IndianLan



