The Duracell CEF15NC is commonly referred to as the 15 minute charger for AA and AAA batteries. To be sure about the charging status of the batteries that one has put on charge, there is an LED that gives an indication of how far the charging process is going on. The Duracell CEF15NC is full OEM compatible and even comes with a warranty. Though it is guaranteed to even exceed ones expectations in terms of performance, one will have to use it properly. That is why having the instruction manual for the charger is very vital. Simply click here to get the Duracell CEF15NC manual.