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
Amazon.com: BestTong 18650 Battery Case Holder, 2 Slots 3.7V DIY Battery Storage Box in Parallel or Series Plastic Batteries Case with Clips Pins Contacts for Soldering 2 x 18650 Pack of 2 : Electronics