Battery in a trailer: Tesla patents new technology for the Cybertruck (2 photos)

Both the pickup truck itself and other consumers can be connected to the auxiliary battery.





The patent application primarily describes the technology for interaction between the electric vehicle's main battery and a connected battery located in a trailer. The control system for both units will synchronize energy consumption based on current road conditions at any given time, maintaining a voltage balance.

Furthermore, the system will be able to take navigation data into account. For example, if the Cybertruck driver has specified a charging station as a destination and the main battery has sufficient energy to reach it, the auxiliary battery will not be consumed. Finally, it is specifically noted that the trailer battery can be used to power other loads, such as household appliances or tools at a construction site.

Whether this technology will be implemented is unknown. Back at the Cybertruck's premiere, Tesla announced an additional battery pack for the pickup truck called the Range Extender. It was intended to be installed in the truck bed, and the option cost $16,000. Commercial Range Extenders never went on sale, and in the spring of 2025, information about this accessory was removed from the company's website.