Operating at high frequency, switchmode power conversion outperforms line frequency (50 or 60 Hz) power conversion topologies such as SCR and controlled ferroresonant in nearly every way. Switchmode technology delivers advantages in dynamic response, smoothness of DC output, size, weight, noise, energy efficiency, cost, and standards compliance. Switchmode converters are typically modular and hot-swappable, meaning that field repair can be performed faster and by less skilled staff than is required to repair legacy line frequency chargers. Despite these significant advantages, there is continued hesitance by some users, including at electric utilities and some industrial customers, to adopt switchmode technology battery chargers. This paper attempts to identify the causes for this hesitance. A new approach to the electrical, mechanical and thermal design of switchmode power converters suggests that the issues identified can be addressed. A ruggedized switchmode battery charger design suited for use in challenging environments is presented.