- Advanced AC control system eliminates the motor brushes and directional contactors, which makes the minimal maintenance requirements. Intelligentized regenerative brake system: increase overall truck performance by decreasing battery charge intervals. - Side-way battery with roll-out system is very convenient to replace batteries. (CBD20KD-I). - Emergency reversing device. - Built-in pressure relief valve protects the trucks from overloading. - Long handle tube supports flexible and laborsaving operation. Emergency power disconnect. - Low speed switch in the handle. - Stepless speed control.