A pair of ESS-like portable battery packs. http://www.thehouseofpower.us/prices.htm The Titannia I has 600 lithium cells and the Titannia II has 1200 lithium cells similar to the ESS. The are planning on the next version to go to Lithium Cobalt or even jump to Lithium Polymer They use no liquid cooling. This type of application is another potential offshoot for TEG These are used to power the new profession digital cinema recoding decks when away from a stable power source. Just think of them as big camera batteries.