This charging method involves charging the battery with a pulse charging current of constant amplitude and cycle. A discharge pulse is also depolarized between the two charging pulses to increase the battery's charging acceptance capacity. Unlike other charging methods, the charging current and pulse width remain constant throughout the process, irrespective of the battery's charging state. This makes it an open-loop pulse charging technique that ensures the battery attains its maximum capacity. However, without a protective device to prevent overcharging, the battery may experience overcharge, which can significantly affect its service life. Though depolarization measures are added to the charging process, they may not always meet the entire charging process's requirements, making it less efficient.