A team of U.S. Army engineers are developing new battery chargers for smartphones, tablet computers and laptops for deployed Soldiers without access to a traditional electrical grid. They have engineered and built prototypes for 8-port, 4-port, and 2-port USB chargers, as well as an AC/USB adaptor -- all of which use a military standard battery such as the BB-2590 as the main power source.

United States Army Article