In this paper an approach to analyses battery-capability in mobile power applications versus temperature is explored. The harmful effects of the modern material (technology) of power-batteries are to highlights. This paper considers performance of power-batteries; experimental tests-based analyses of these power-batteries are used. The performance of a Lithium-Ion, Nickel-Metal, recent Lead-Acid batteries or Supercapacitors are shown to touch on the most general features of power using in mobile applications. Two aspects of batteries are considered in this paper, battery-capability versus temperature and load-effects of high currents during the charging and discharging process. It is shown that there is an overall reduction in the internal losses due to temperature effects to take a significant reduction in battery-efficiency, so to change battery-capability. The main features of several different types of batteries are shown in this paper including their detailed analysis to show the effect of temperature change. Three possible temperatures are explored: a) −10 °C (14 F); b) 10 °C (50 F); and c) +25 °C (77 F) for low-current and a maximum-current loading to get the performance of batteries behaviors. The results shown that the value of temperature or current-loading has an effect on the capacity, because the internal resistance of batteries is variable.