An almost perfect charger. It lacks to me a battery charging mode battery. The charger charges actually two stacks of pairs (2x2). If we remove a stack of a couple, then stops charging. Too bad if only one battery charge must not, wait to have discharged his little sister / Otherwise the load indicators can anticipate the end of charge and it is convenient. After a couple charged battery, the charger automatically stops on that part to preserve the life of the batteries.