Soldiers are becoming more and more reliant on technology and the old-fashioned lithium-ion batteries won’t really do the trick. The US military currently uses the Ultralife UBI-2590 battery pictured below, which weighs in at 1.4kg a piece. However, their capacity is extremely limited and solders need a lot of them to get the job done in the field.
To overcome this issue, DARPA’s Transformative Apps program and their team of engineers from Ultra Electronics have built a lightweight, 350-watt propane generator that is capable of charging its batteries in the field, with the added bonus that it is completely silent.
The idea might not seem such a game changer, but the picture below comparing the old Ultralife UBI-25290 and DARPA’s propane alternative seems to make sense. The screenshots describe that the propane solution is equivalent to 100 Ultralife batteries, which in turn help soldiers reduce the weight load. One Ultralife UBI-2590 battery weighs in at 1.4 kg, while the generator weighs only 5 kg and the tank just 9 kg. There even seem to be smaller 1.8 kg tank alternatives, should the 9 kg propane tank be too much.
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