To be portable, an electronic assistive device must be battery powered. Based on your study of technical manuals and battery handbooks, list the pros and cons of using disposable alkaline batteries versus lithium-hydride rechargeable batteries. Include in your comparison an analysis of the technical issues (e.g., battery capacity, weight, and charging circuitry), cost issues, and . practicality issues (e.g., user preferences, potential for misplacement or improper usage of charger, and user convenience).