This study explores the performance of lithium iron phosphate (LFP) batteries under varying current rates. LFP batteries, known for their long lifespan and high energy density, are extensively used in electric vehicles and energy storage systems. To better understand their thermal behavior, experiments were conducted by charging the batteries at different current levels, maintaining a constant temperature of 20 °C. The findings reveal that current rate variations significantly impact battery performance. At lower current rates, battery capacity and efficiency diminish, while higher current rates pose increased safety risks. These results underscore the critical need for effective thermal management strategies to ensure the safe and efficient operation of LFP batteries. This study provides valuable insights into the optimization of LFP batteries for safer and more efficient applications across various industries.