Reflex charging, or burp charge, is a prove method of effectively charging secondary\rbatteries under extremely high current. It is commonly used in military and aerospace\rapplications where short recharge time and long cell life are essential. Eric C. Darcy, a NASA\rchemical engineer, in his 1998 PhD thesis, ‘Investigation of the response of Ni-MH cells to\rburp charging’, outlined some of the most important theories behind this seemingly\rmiraculous technique. However, due to the technical limitations of his equipment, Darcy was\runable to determine the effects of varied reflex charging frequencies. This research overcame\rthis problem by using a purposed built multi-frequency programmable reflex charger\r(PRESTO ALPHA I), and aimed to optimize chemical energy storage by searching for an\roptimum charging frequency.