The intelligent eneloop fast charger is ideally suited for the demanding user and charges 1-4 Ni-MH batteries of size AA (Mignon) or AAA (Micro). It features individual cell monitoring and checks and charges each cell separately. Each charging slot has an LED display that shows the status during the charging process. For particularly gentle charging, it is equipped with a premium overcharge protection that includes Smart Charge and -deltaV: it charges each cell individually and automatically stops the charging process before overcharging occurs. The microprocessor-controlled charger offers many other practical features, including the ability to determine the remaining charge of already used batteries. In just 1.5 hours, 1-2 empty eneloop batteries are fully recharged. The Battery-Life Checker checks the condition of your batteries and indicates when a battery needs to be replaced.