Far-a-Day battery trailer adds up to 300 km of EV range
Far-a-Day's 60 kWh battery trailer for EVs adds up to 300 km with a two-minute swap. Pilot on Paris-Bordeaux in 2026; costs comparable to fast charging.
French developer Jean-Baptiste Segard has unveiled an updated Far-a-Day system — a battery trailer designed to extend the range of electric cars. The concept calls for stations at highway entry points, where a depleted module can be swapped for a charged one in under two minutes.
Weighing around 500 kg, the trailer carries a 60 kWh battery and connects to the car automatically. The module can add up to 300 km of range, a leap that outpaces what rapid charging typically offers small EVs. For example, the compact Citroen e-C3 with a 40 kWh pack covers about 220 km on the highway; with a Far-a-Day trailer, the total distance reaches a level comparable to the best long-haul passenger cars. For occasional long trips, the swap approach looks like a cleaner workaround than hauling an oversized battery every day.
The first test corridor is planned for 2026 on the Paris–Bordeaux route. By 2027, the network is expected to include about 30 stations. According to the developers, the cost of energy will be comparable to fast charging. The system targets owners of small-battery EVs who rarely, but sometimes critically, need extra range. The limitations are straightforward: the car must be approved for towing and equipped with a tow hitch.