In the not-so-far future when electric vehicles (EV) rule the road, don’t expect to sit around in line waiting for your battery to charge. That’s because electric automaker Tesla recently filed a patent for a mobile battery swapping technology that could replace a depleted battery in under 15 minutes.

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In 2013, the company toyed with the idea of building stationary rigs that can replace a car’s battery pack. However, that idea never took off. Now, the EV maker is improving on the concept and has filed a patent application for a more compact, mobile version that would be placed in strategic locations where Superchargers aren’t always available.

As Elektrek reports, Tesla’s original system was designed to be autonomous, while the newer one can be operated by technicians. Additionally, the original battery swap service claimed a 90-second swap, whereas the new one says “less than fifteen minutes” is more plausible.

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Says the patent application, “In some implementations, the battery swap system is configured for use by one or more technicians, who will monitor certain aspects of the system’s operation and make necessary inputs when appropriate. For example, the battery-swapping system can be installed at a remote location (e.g., along a highway between two cities) and one or more technicians can be stationed at the location for operating the system. This can reduce or eliminate the need for the system to have vision components, which may otherwise be needed to align the battery pack or other components. Using techniques described herein it may be possible to exchange the battery pack of a vehicle in less than fifteen minutes.”

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As can be seen from the application figures, the patent application references swapping Model S and Model X battery packs. Both vehicles’ battery packs have been designed to be easily swappable. Model 3’s battery pack is not, on the other hand. Because the company aims to expedite the process in 15 minutes or less, it is unlikely the system will apply to more complicated swaps.

Related: Tesla to TRIPLE number of Superchargers by end of 2018

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When Tesla CEO Elon Musk last mentioned the battery swap system, he said it would likely be developed to support commercial fleets — if pursued at all. Now that plans for Tesla’ all-electric Semi-Truck have been shared, Musk’s vision is coming into focus.

+ Tesla

Via Elektrek

Images via Tesla, Pixabay