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Customized power supply system

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External potential energy recovery system for elevators


Our products are widely applied in key sectors such as industrial energy conservation and environmental protection, power systems, rail transit, medical equipment, electric vehicles, high-end equipment, military industry and new energy, gaining widespread market recognition for stable and dependable performance.


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External potential energy recovery system for elevators Elevator energy recovery system Elevator energy-saving potential energy recovery system Elevator potential energy recovery device The external potential energy recovery system composed of supercapacitors/lithium-ion capacitors and bidirectional DC/DC converters is directly connected in parallel to the DC bus of the frequency converter. During the energy feedback process, the bidirectional DC/DC converter rapidly charges the supercapacitor, which not only recovers energy but also avoids voltage rise on the DC bus of the inverter. During the energy consumption process, bidirectional DC/DC converters utilize supercapacitors to rapidly discharge and inject power into the DC bus of the frequency converter, which can reduce the consumption of mains electricity.

Packaging Details
  • - Primary packaging: Anti-static PE bags (100pcs/500pcs per bag, based on capacitor size)
  • - Secondary packaging: Anti-static corrugated cardboard boxes (1000pcs-5000pcs per carton, customized by product model)
  • - Custom packaging available (private label, branding, customized carton size and logo)
  • - Labels include product model, capacitance, voltage, batch number, production date, and shelf life
Shipping Information
  • - Protective measures: Anti-static, shock-proof and moisture-proof packaging to avoid damage during transportation
  • - Lead time: 7-15 days for standard products; 15-25 days for customized products
  • - Port of loading: Qingdao/Shanghai/Shenzhen, China (optional based on order quantity)
  • - Incoterms: FOB, CIF, DAP (customizable according to customer requirements)
  • - Documentation: Commercial invoice, packing list, certificate of origin, product qualification certificate

Frequently Asked Questions

Yes—we offer free samples for qualified customers, with freight collect.

Yes—we provide custom specifications for capacitance, voltage, size, pins, and terminals.

We main products include power film capacitors, supercapacitors, lithium-ion capacitors, sodium-ion batteries and other product series.

Our capacitors are widely used in rail transit, new energy vehicles, energy storage, PV/wind power, power supply, aerospace, and military industries.

Standard products: 7–15 days. Customized products: 15–25 days based on specific requirements.