The paper investigated the circumstances and processes involved in the development and validation of Success Potential Battery (SPB) for measuring the success potential of individuals. The population cuts across adolescents, youths, adult and old people of diverse callings since the issue of success know no bounds. Hence, a sample of 2000, with 500 from each of the identified groups was randomly selected to participate in the survey study. The internal consistency values for the subscales ranged between 0.6539-09210. Standardized item alpha for the 16 scales ranged from 0.6838-0.9188 . The Crombach alpha ranged between 0.6824-0.9193. The Guttman split half reliability ranged between 0.5186-0.8580. The Convergent validity for the 16 scales ranged between 0.426-0.704 while the Discriminant validity ranged between -.005--.206. The significant inter-factor correlation coefficient is an evidence for strong construct validity of the scales. The significance of the psychological inventory to individuals, researchers, psychologists, students, teachers, counselors, organizations and anybody interested in evaluating his/her success potentials were stressed.