SPLATRBALL 1800 mAh Water Bead Blaster Replacement Battery - Walmart.com
Universal Battery Charger With Four Independent Slots And Automatically Stop Charging Fit for 18650 Rechargeable Battery (No batteries included) - Walmart.com
Amazon.com: Taken 18500 Rechargeable Li-ion Battery with Charger, IMR 18500 3.7V 1500mAh Rechargeable Battery with Button Top, 4 Pack 18500 Rechargeable Batteries with 2-Ports Charger : Health & Household