1. This charger can charge 1-4pcs AA/AAA NiMH/NiCd rechargeable batteries, LCD battery display. 2. Charging under IC controling, Vintellingently cut off the rapid charging mode. The transfer to grikle charging, insure fully charged, meanwhile protect grom over charging. 3. LEDs indicate the charging process, it will turn off when the batteries are fullycharged. 4. Over discharge protect, constant current charging can keep longer battery life, and insure safety usage. 5. Over-temperature protect: (. 60 degree use) the battery and charger temperrature is too high and it will auto-cut off charging, insure safety usage. 6. Short-circuit protection: Avoid the battery polarity"+/-"short -circuit protect. 7. Worldwide Voltage, Suitable for the whole world.