TrustFire TR-001 Multifunctional Lithium Battery Charger for 18650 18500 17670 16340 14500 10440 (Black) Compact, portable and multi-functional design. It can charge two batteries at a time. Suitable for rechargeable 18650 18500 17670 16340 14500 10440 lithium battery. It has many protection functions: over voltage protection, over current protection, short circuit protection, the battery polarity reverse connection protection and so on. With 2 LED indicators: red light stands for charging status and green light for fully charged. Color: Black