Charge transfer to a rimming graupel target during interactions with ice crystals has been investigated in the laboratory. When liquid water contents sufficiently high to cause wet growth are achieved, the charge transfer falls to values which are insignificant to thunderstorm electrification. The implication of this null result to a recent analysis of thunderstorm-charging processes by Williams et al. (1991) are discussed. ¿ American Geophysical Union 1992