This series of products are driven by hydraulic motor and equipped with exclusive lithium-ion battery. Compared with traditional lead-acid battery, the whole life cycle is maintenance-free, the battery life is increased by 30%, and the life is increased by 3 times. It promises 5 years warranty and 100% recyclable. The endurance is almost unchanged in the alpine region. Under the cold working condition of -20℃, it can charge and work effectively to ensure the reliable and stable operation of the equipment, help the lessor to carry out fine management, and achieve cost reduction and efficiency increase.