NiMH batteries have the same memory effect as NiCd batteries. Therefore, periodic discharge management is also necessary. Such periodic discharge management is handled in a vague state, and even some discharge is carried out with incorrect knowledge (each discharge or discharge after several uses varies from company to company).
This cumbersome discharge management is unavoidable when using nickel metal hydride batteries. Lithium-ion batteries are relatively easy to use because they have no memory effect at all. It does not need to care how much residual voltage, can be directly charged, charging time can be shortened naturally.