Chubby Gorilla battery case The Chubby Gorilla - 18650 Battery Case is made of flexible and durable ABS Plastic that’s capable of keeping your pair of batteries safe and secure. The battery case’s structure helps prevent any tearing of your battery wraps, as well as keeping your batteries away from any friction that could cause static electricity when storing it in your pockets. With its aggressive, high-strength ABS design, the Chubby Gorilla Dual 18650 Battery Case makes for the perfect storage unit for anybody’s pair of batteries.   Chubby Gorilla - 18650 battery case Product Info * Dual Configuration for 18650 Batteries. * Easy Fit Application Holds Batteries Firmly in Place.