Li-ion batteries have a mostly flat discharge voltage curve, which helps devices run steadily until the battery is nearly empty. Discharge rate, temperature, and battery chemistry strongly affect battery capacity, lifespan, and safety; managing these factors improves performance. The performance of. . These characteristics describe how voltage drops during discharge, how a flat discharge curve supports stable power, and how current, temperature, and chemistry shape performance. The measured cell voltage at the end of its operating life is called the EODV, which stands for End of Discharge Voltage (some manufacturers. . The early Li-ion battery was considered fragile and unsuitable for high loads. With the global Li-ion market projected to reach $135 billion by 2030. .