Smart Double Slot Battery Charger and 4 Rechargerable 16340 Li-ion Battery Smart Charger Intelligent Charger:Can charge 16340,18650,14500,18490,17670 Batteries 16340 Li-ion Battery: 1500 mAh 3.7V Rechargeable battery No memory effect, recharge up to 10000 cycles. Lightweight, compact and easy to carry Manufactured by high power capacity products and Environmentally friendly etc.