2 Slot 18650 Battery Charger - 2 Slot Works on Flat Tops, Button Tops, and Standard 18650 batteries - Walmart.com
Batteries N Accessories BNA-WB-LI50B Digital Camera Battery - li-ion, 3.7V, 1000 mAh, Ultra High Capacity Battery - Replacement for Olympus LI-50B Battery - Walmart.com