Viridian Weapon Technologies Battery, 4Pk, Green 350-0002 New Tactical Energy Ultra Lithium Batteries CR1/3N Lithium powers the Viridian Essential Series" the Viridian Reactor Series and many other electronic devices Viridian tactical batteries deliver the power to prevail when it counts. Advanced lithium technology" matched to the demands of tactical tools" ensures stronger" longer-lasting energy under all conditions. For performance you can trust under fire.