... :11.1VSize: 18*18*195mmcombination:3s1pAdvantages:1, Long cycle life 2, No memory effect 3, High energy density4, Light weight, small size5 ... good18650 11.1v 2900mah 3s1p for power toolsApplications:1, Flashlights 2, LED flashlight3, Explosion-proof flashlight4, aluminum alloy flashlight5, Tactical Lights ...