These autonomous 'power banks on wheels' navigate to parked vehicles, connect, charge, and disconnect without human intervention. Gotion High-Tech's 宜加电 (Easy Charge) and CATL's CharGo (充电狗, 'Charging Dog') are deployed in residential complexes and highway rest areas.
The technology solves a specific bottleneck: China has more EVs than charging infrastructure can support, especially in older residential buildings without dedicated charging. Mobile charging robots charge themselves overnight at underutilized fast-charging stations, then distribute that energy to vehicles parked at locations without permanent chargers.
The business model is elegant: instead of building expensive fixed infrastructure at every parking location, a smaller number of mobile robots can serve a larger area. During holiday travel peaks, the robots are deployed to highway rest areas where charging demand spikes. It's grid load-balancing meets last-mile logistics.