Product Designed For Aa / Aaa Ni-Mh / Ni-Cd Batteries Rechargeable Batteries,You Can Charge 1 - 4 Pieces Aa / Aaa Ni-Mh / Ni-Cd Batteries At The Same Time. - It Provides 4 Independent Charging Slots, Led Light Display The Charging State, Convenient To Use. - Intelligent Computer Chip To Control The Charging Process:The Av Intelligent Technology To Cut Off The Rapid Charging Mode, Automatic Transfer To Trickle-Charging Mode, Reliable And Safe. - Auto Power Off Function: If The Batteries Are Fully Charged, The Charger Will Cut Off The Power Supply Automatically. - Over-Current Protection,Temperature Protection:When The Over-Temperature ( 60 Deg.C Or Higher ) Occurs In Charging Battery Or Charger, It Will Stop Charging Automatically. - Auto-Identify Function: Identify The Non-Rechargeable Batteries, Short-Circuit Batteries And Defective Batteries, Then The Charger Will Not Charge It To Ensure Safety Usage. Package Includes: Dmk-Tc2A9 Ni-Mh/Ni-Cd Aa/ Aaa Charger---1Pc