Viridian CR23: 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. These batteries are for laser sights, weapon-mounted lights and tactical flashlights. They have maximum life for instant readiness and maximum power delivery start to finish. They feature a low-impact, recycle-friendly design.