Lithium battery cost and discharge only 400-600 instances, specifically changed solutions, but 800 instances. The nickel-metal hydride rechargeable battery can arrive at far more than seven hundred instances, some great good quality solutions up to 1200 instances cost and discharge, these types of a comparison, the nickel-metal hydride batteries reside for a longer period than lithium batteries. Also, the cost of nickel-metal hydride batteries is far reduced compared to the lithium batteries. What's more, strictly speaking, lithium batteries have the identical memory result, but its memory result is rather lower, generally negligible.