CycleWatt's Second-life Battery Energy Storage System E-Stack Unlock Your Efficiency

Electric vehicle charging station outdoors with a sign reading 'CycleWatt' and trees in the background under a clear sky.

The E-Stack is a compact, high-performance BESS designed for commercial & industrial use. It integrates 4 second-life EV batteries and is powered by our self-developed Energy Management System (EMS).

Key Features:

  • Compact & Efficient: Maximizes energy density in a minimal footprint.

  • Smart Management: Our integrated EMS provides real-time monitoring and control.

  • Easy Maintenance: Streamlined access for battery replacement and service.

  • Scalable Deployment: Operate and monitor single unit or multiple systems seamlessly together.

The E-Stack delivers reliability, sustainability, and intelligence — all built with repurposed batteries and advanced software.

40kW/130kWh

4 Packs Per Unit

Hybrid PV-ESS

Solar integration without additional inverter

4-8 Hours

Discharge Duration

EMS

Remotely Control

400V AC

3-Phase Output (3L/N/PE)

10MWh

Modular Project Size

Competition Barriers: How to Create an Extremely Safe Second-life BESS

How Our E-Stack Can Transform Your Energy Use?

BESS offer solutions for a wide range of sectors and industries. At CycleWatt, we provide customized BESS designed to meet the specific needs of each client.

Our E_Stack addresses unique challenges such as:

  • EV Charging Support: Enhancing EV charging infrastructure with buffer storage to reduce grid demand, enable fast charging without grid upgrades

  • Energy Cost Reduction through peak shaving and load shifting

  • Renewable Integration to stabilize solar and wind power output

  • Backup Power for enhanced reliability and business continuity

    With a focus on innovation and sustainability, we deliver smart, scalable, and efficient energy storage systems that support both economic and environmental goals.

Various images of electrical infrastructure and utility containers, including a graffiti-covered utility transformer, a server room with multiple high-voltage cabinets, an outdoor portable communication or power unit, a data center with open server racks, a solar charging station, and a large metal storage container.

    • Our E-Stack significantly reduces the need for costly grid infrastructure upgrades — which can often require millions of dollars and years to complete — by providing high-power buffer storage right at the charging site.

    • The E-Stack helps significantly reduce energy costs and grid strain by intelligently discharging stored energy during periods of high electricity demand.

    • The E-Stack seamlessly integrates renewable energy sources like solar and wind, storing excess generation when production is high and delivering clean power when it’s needed most.

    • The E-Stack ensures continuous and reliable electricity by storing energy during normal grid operation and automatically supplying backup power during outages or disruptions.