I almost always have a little something of a drop on the post. It's not like it's going to short the battery or anything, if that's what you're thinking. Altho it may cause problems when screwed onto charger.
If the carto has a constant leak, it will be all over the place- not just a drop. If you condom fill, you have to really blow it out well, and then still you'll get some for awhile.
No biggie.