EBL 8 Bay AA AAA NiMH NiCD Rechargeable Battery Charger - ETL Certified Smart Charger This EBL 808 charger can charge 2/4/6/8 AA/AAA Ni-MH/Ni-Cd rechargeable batteries. ETL Certified - Upgraded battery charger, double safety protected, the ETL Mark is proof of product compliance to North American safety standards. Controlled by MCU, automatically stop charging when detecting improper input voltage, defective or short circuit or non rechargeable batteries. Using -V intellectual cut-off charging method, automatically turn to trickle charge, prevent the batteries from over-voltage, over-current or over-heat. Constant current charging would protect the batteries against current fluctuation and keep using the charger safely.