18650 Battery Charger, 2 Slot Universal Battery Charger for 3.7V Type C Li-ion Rechargeable Batteries 18650 10440 18350 17500 17650 16340 14500 20700, Universal Batteries Charger

Made from durable ABS (fire retardant)Automatically stops charging when completeFeatures over-charge prevention and temperature monitoring to protect batteriesFeatures reverse polarity protectionWork length is adjustable for more battery sizesReasonable heat sink design to ensure fast charging without overheating.