First and foremost, all electric truck batteries are based on lithium-ion technology, which is energy dense and quite efficient. These batteries charge and discharge electric energy to drive motors that rotate the truck's armature. This energy is stored in cells, which collectively consist of the anodes and cathodes along with electrolytes. While charging the battery, lithium ions migrate from anode to the cathode, and back during the discharge and this movement generates electricity. It is important to understand this trend for better utilization of the battery and improving its performance.