RipaFire&reg; Four-slot Intelligent Charger Universal Charger for 18650/26650/14500/16340/10440 Auto Off Battery Charging Charger 4.2v 3.6v Li-ion Battery 1.5v 1.2v Battery Aa/aaa + 12 PCS RipaFire 4000mah 3.7v 18650 Rechargeable Li-ion Batteries Sold on Amazon