As long as you setup your charger properly I.E. how many cells, and charge rate it should "Delta Peak" on it's own. Like I said if your really worried about it stop the charge for a hour or so. What voltage are you at right now? and on how many cells?

Right now I'm charging my 8cell and my voltage is....about 11.7v right now... that's while charging. Once I stop it will fall, probably to the high 10 volt range.

Jay