While the single shaft charging system is functioning, but the system is unfortunately very unclear. Since I have to compare the battery Trainer 2, I must confess that the software and operation has become much worse. Once the batteries are fully charged, you can see only one energy index. This compares the charged battery pack on a 100% basis. The battery was the most loaded is the other percentage less on Index 1.00. How much Ah actually charged can no longer see when charging is complete you. This is particularly annoying when you only load a battery, for there can be nothing more refer to information.