VoltCycle Hubs develops and deploys modular battery energy storage systems (BESS) by repurposing second-life modular batteries from electric vehicles (EVs) and e-mobility solutions. The problem it solves is the growing need for flexible, affordable, and sustainable energy storage and charging infrastructure, particularly in areas with nascent EV adoption or unreliable grid access, while also promoting a circular economy for EV batteries. The system works by collecting retired modular EV batteries, assessing their remaining capacity, and re-packaging them into robust, scalable BESS units that can serve as mobile EV charging stations, community power banks, or temporary event power sources.