`Lithium battery charge and discharge only 400-600 situations, specially changed products, but 800 situations. The nickel-metal hydride rechargeable battery can reach more than 700 situations, some excellent good quality products about 1200 situations charge and discharge, this sort of a comparison, the nickel-metal hydride batteries live extended than lithium batteries. Moreover, the price of nickel-metal hydride batteries is way lower compared to lithium batteries. In addition, strictly talking, lithium batteries have the identical memory effect, but its memory effect is extremely minimal, fundamentally negligible.