Gp gprhou421002 powerbank charger u421 with 4 recyko pro aa gp gprhou421002 p this u421 charger from gp is ideal for charging 4 x aa aaa nimh batteries 1 battery per one channel the usb charger offers 40 minute high speed charging per battery has an led indicator to display when charging is in progress and comes with 4 x recyko 1000 aa batteries p gp gprhou421002 powerbank charger u421 with 4 recyko pro aa