HTTX 18650 Battery Holder, 2-Slot 3.7V 18650 Battery Storage Box Case with ON/OFF Switch 6inch Bare Wire Leads - - Amazon.com
Amazon.com: 4Pcs 18650 Battery Holder,3.7V 18650 2 Section High Temperature Resistance Black Battery Container Case Battery Storage Box Power Bank Charger, for SMD 18650 DIY Charging Power Supply : Electronics