Plastic 18650 Battery Storage Case 2 Slots x 3.7V for 2x18650 Batteries Holder Box Container with ON/Off Switch, Set of 5, by Ltvystore : Electronics - Amazon.com
12V 3S7P Battery Case 3S40A BMS+ Holder+Welding Nickel for 18650 Power Supply | eBay
Protect Your Power - Slimline 18650 Battery Case, Soft Durable Material - Pack o | eBay