DARPA wants batteries that are ten times more powerful

Drones, autonomous robots, and advanced sensors all have a common problem. All of these systems require a lot of electricity. That's why the U.S. Defense Advanced Research Projects Agency (DARPA) has launched a special program called ExPEDitions (Expeditionary Power- and Energy-Dense Implementations). The goal of this initiative is to create batteries with advanced chemistries and architectures that will achieve five to ten times higher energy density than today's lithium-ion technologies. Industry reports indicate that they are aiming to exceed the 2 kilowatt-hour per kilogram (kWh/kg) mark.

In the military environment, energy is a key currency. Current technologies force engineers to make trade-offs between endurance and performance. Surveillance drones need to stay in the air for hours, while combat drones need sudden bursts of power to execute aggressive maneuvers. The ExPEDitions program aims to overcome this limitation with batteries that can do both at the same time.

Improved technology will also bring a huge logistical advantage. Every fuel convoy and every charging station on the battlefield is a vulnerable target. Batteries that store significantly more energy would drastically reduce the number of dangerous resupply missions needed to support soldiers and autonomous systems in the field. Drones could remain in position for longer, and robotic vehicles could travel further without reliance on fixed charging infrastructure.

Washington's move is also a response to geopolitical challenges. Analysts warn that batteries are no longer just an energy issue, but have become a strategic military tool. China currently controls the global battery supply chain, from lithium processing to mass production of cells. As militaries increasingly electrify their vehicles, access to advanced batteries has become a national security issue. Domestic production capacity and resilient supply chains will therefore be essential to maintain a technological advantage.

The breakthrough in battery performance will impact nearly every aspect of military operations. Lighter, more energy-dense power sources will transform infantry equipment, portable radar systems, autonomous underwater vehicles, and communications networks. The program will run over two 36-month phases, beginning in 2027 with the award of multiple prototype contracts. The success of this initiative could permanently transform the fields of robotics, aviation, and electric transportation beyond the military.