Magic-Flight Battery Case. Safely store up to 4 Magic Flight Batteries. This 4-cell Battery Case is great for organization, whether you are at home or on the go. The Battery Case holds 4 batteries and is made of a frosted plastic to protect uncapped batteries from shorting out. Our translucent Battery Case measures ⅝” x 2⅛” x 2½”, allowing for a slim, compact organizer that fits easily into your pocket or Launch Box Kit.