Charge Qube The Battery-Powered Future of Fast Charging

How EV Conversion Expertise is Powering the Future of Charging

Fellten has spent years at the forefront of EV conversion technology, transforming classic cars into modern electric masterpieces with their industry-leading plug-and-play conversion systems. But their expertise doesn’t stop at vehicle electrification. With the rapid growth of the EV market, Fellten has recognized a critical challenge that’s often overlooked: what happens to EV batteries when their automotive life is over?

Enter Charge Qube, a modular, scalable Battery Energy Storage System (BESS) that repurposes second-life EV battery packs for commercial and industrial energy storage and ultra-fast charging. By leveraging its deep understanding of EV battery technology, Fellten has created a system that extends the useful life of these high-capacity batteries, helping businesses, fleet operators, and event organizers transition to cleaner energy solutions—without expensive infrastructure upgrades.

And now, with plans to introduce Charge Qube to the US market, the system is set to disrupt traditional energy storage and EV charging solutions, offering a game-changing alternative for businesses struggling with grid constraints and high charging demands.

Second-Life Batteries

The EV revolution has brought cleaner mobility, but it also presents a looming challenge: battery lifecycle management. When an EV battery pack reaches the end of its optimal performance for driving—often retaining 80-90% of its original capacity—it becomes a wasteful proposition to discard it. But reusing these batteries in a new role, such as energy storage, creates a circular economy where valuable resources are maximized rather than wasted.

Charge Qube solves this problem by repurposing battery packs from vehicles like the Tesla Model 3/Y, VW ID3/4, and BMW i3, turning them into energy storage units for businesses, charging stations, and even off-grid applications. These second-life batteries, originally engineered for automotive use, have undergone rigorous safety and durability testing, making them far more reliable than many conventional energy storage solutions.

How it Works

Charge Qube is built to be modular, mobile, and scalable, adapting to various use cases and power needs. Rather than requiring costly infrastructure upgrades to support high-speed charging, Charge Qube acts as a buffer, storing energy from the grid or renewable sources and delivering ultra-fast charging when needed.

Modular Stacking – Each Charge Qube can house up to six repurposed Tesla Model 3 battery packs, totaling 450kWh of stored energy, with scalable configurations for larger deployments.

  Flexible Charging Options – Charge Qube supports both AC and DC fast charging (NACS/CCS), enabling up to 240kW ultra-fast charging without overloading local grids.

Seamless Grid Integration – It can pull a steady 32A three-phase supply, gradually recharging over time while still delivering peak power when needed.

Smart Battery Management – Fellten’s proprietary Battery Management System ensures safety, efficiency, and longevity, maintaining Tesla’s original thermal management and contactor systems.

The Charge Qube’s AC charging system is designed for flexibility and scalability, utilizing up to six dedicated “Pavilions.” These modular charging stalls connect directly to the Charge Qube and each house two AC chargers, allowing multiple vehicles to charge simultaneously. This setup ensures efficient energy distribution while maintaining a compact footprint, making it an ideal solution for fleet depots, workplace charging, or event-based applications. For fleet operators, event organizers, and businesses looking to install rapid EV charging without expensive grid upgrades, Charge Qube provides an elegant, temporary or semi-permanent solution.

Charging Without the Infrastructure Bottleneck

The biggest barrier to widespread EV adoption in fleets, logistics, and ride-sharing services isn’t just the cost of electric vehicles—it’s the lack of charging infrastructure. Traditional charging depots require costly grid reinforcements, sometimes running into six-figure investment costs and years of planning.

Charge Qube eliminates this barrier by offering a plug-and-play solution that can be deployed in days, not months.

  Fleet Charging & Logistics – Businesses can lease, rent, or purchase Charge Qube units, allowing them to charge electric vans, trucks, or rideshare vehicles on-site without permanent infrastructure.

Events & Temporary Installations – Music festivals, motorsport events, or pop-up venues can use Charge Qube to power EVs without needing grid access.

   Disaster Relief & Off-Grid Power – Pre-charged units can be deployed in hurricane-stricken regions, remote areas, or construction sites, creating an instant microgrid.

Industrial Power Management – Charge Qube can also buffer grid demand in manufacturing plants, balancing phase loads and reducing peak energy costs.

As EV adoption continues to accelerate in the US, Charge Qube is poised to become the go-to solution for companies that need reliable charging and energy storage—without the high costs and delays of permanent installations.

Second-Life Batteries at Scale

With demand for sustainable energy storage and charging solutions growing across North America, Fellten is actively working on bringing Charge Qube to the US. Unlike traditional battery energy storage systems that rely on imported lithium-ion cells, Charge Qube sources batteries locally, repurposing packs from high-mileage or written-off  EVs in the US market, including fleet vehicles.

This not only reduces environmental impact but also ensures that Charge Qube units remain price-competitive with brand-new energy storage systems from abroad, while offering the safety and reliability of OEM EV battery technology. And because Charge Qube operates within a modular, temporary structure, businesses and municipalities can deploy energy storage without long-term permitting, land use approvals, or zoning issues—making it one of the most adaptable energy solutions available today.

SPECS

Charge Qube

Battery & Energy Storage

• Repurposed OEM EV battery packs (Tesla Model 3, VW ID.4, BMW i3, and others)
• Up to 450kWh of scalable energy storage per 10” container
• Liquid-cooled thermal management for long-term battery health
• Smart Battery Management System (BMS) maintaining Tesla’s original contactor and pyro fuse system

Charging Capabilities

• AC charging up to 22kW per port (up to 12 per Charge Qube)
• DC ultra-fast charging up to 240kW
• Multiple charging ports per unit (up to 36 AC chargers on larger installations)

Power & Grid Integration

• 32A three-phase input for gradual charging
• Grid buffering to avoid infrastructure upgrades
• Hybrid generator integration for construction sites and off-grid use
• Cloud-based monitoring & diagnostics

Deployment & Use Cases

• Temporary or semi-permanent installation (no zoning permits required)
• Fleets, logistics, and delivery vehicle depots
• Events, motorsports, and off-grid applications
• Disaster relief & emergency microgrids

Charge Qube is now rolling out across the UK and is actively being prepared for US launch in 2026.

For partnerships, leasing options, and technical inquiries, contact Fellten at:

• ChargeQube@Fellten.com
• www.chargeqube.com