We have performed a series of beta-decay experiments at fragmentation facilities on T-z=-1/2, T-z=-1 and T-z=-2 nuclei. Most of these nuclei lie on the rp-process path and therefore some of the quantities we have measured such as T-1/2 values are important ingredients in performing reaction flow calculations for light curve estimates and testing astrophysical models of X-ray bursters. At this conference we have presented the results of measurements of T-1/2 values for 25 nuclei and compared with previous values.