This series of unidirectional charging devices is designed for industrial and consumer mobile power supplies, using a unidirectional energy transfer architecture that enables high-efficiency charging from the grid to the battery. It offers strong value for money. The product supports wide-voltage input and is compatible with various power sources such as mains electricity and diesel generators, suitable for lead-acid, lithium, and lithium iron phosphate (LiFePO4) battery chemistries. It adopts a smart three-stage charging strategy with BMS communication compatibility to effectively extend battery life. Built-in protections cover overvoltage, undervoltage, overcurrent, overtemperature, and short-circuit in all scenarios, ensuring safe and reliable charging. The industrial version features high protection and vibration resistance, while the consumer version prioritizes portability and ease of use. It is widely applicable to battery replenishment for energy storage systems, outdoor power, and vehicle-side backup power.