The rising demand for EVs has led to increased demand for Lithium-ion batteries (LIBs). Due to the limited natural sources of the battery materials, the need for safe and efficient recycling of LIBs is critical. Batteries at their end-of-life still might have residual energy. Therefore, to safely discharge batteries prior to the recycling processes is needed to minimize the risk of explosion and thermal runaway. This study investigates the electrochemical discharge of LIBs by sodium chloride (NaCl) and potassium carbonate (K₂CO₃) solutions, with a focus on the impact of discharge current. By proposing a novel methodology, real-time monitoring of the voltage and current of the battery during electrochemical discharge will be possible, and this can be used to optimize the discharge process to have a more efficient and safer recycling process. The results reveal that a higher concentration of the discharge electrolyte would lead to faster energy extraction. NaCl electrolyte indicated deeper voltage drop in the long run, while K₂CO₃ electrolyte provides higher energy recovery in a shorter time, offering a more efficient discharge process. Additionally, excessive discharge current can lead to overheating and higher voltage rebound, which should be taken into account when optimizing the electrochemical discharge process. By balancing the discharge rate, discharge time, and energy recovery, this study aims to provide additional tools to increase the sustainability and safety of LIBs preprocessing recycling.