Electric vehicles are penetrating the transportation sector with a pace to reduce greenhouse gases and climate changes. Some limitations to penetrating in market are range, thermal performance, and battery cost. The performance of electric vehicles is majorly based on the quality and chemistry of the battery. The current study is on the Lithium Iron Phosphate battery pack of 48 V 42Ah with an ambient temperature. The current demand for electric vehicles varies with the speed under various loading conditions. Heating of the battery in real-time is one of the problems currently faced by automakers. The Joule's heat is the primary parameter for increasing the battery's temperature. Prediction of the heat generation in the battery was carried out with different mechanisms at constant charge/discharge rate, not with dynamic loading. The inefficient battery thermal management system may result in the thermal runaway, leading to fire catch incidents, hence estimation of the current withdrawal needs to be accurate. To predict heat generation, 1. Bernardi's equation used, but having limitation in predicting accurate heat prediction, 2. Ohmic/Joule's equation, the current must be known. Hence, experiments carried out to find the current withdrawal under different actual loading conditions. In this work, the temperature rise under various loading conditions is measured on the single-wheel vehicle model operated on a battery, at varying conditions of rolling resistance, load, speed, and test duration. Experiment results show a 7.6 & 6.7°C rise in battery temperature at 125 kg, 15km/hr speed for 75 min on concrete and tar roads, respectively. From the experimental result need of the battery thermal management system, heat dissipation rate can be efficiently designed.