... ion Rechargeable Protected 18650 Flashlight/Torch Battery Specifications:1.Norminal capacity: range from 2200mah-3400mah2200mAh, 2600mAh, 2800mAh,2900mAh and 3000mAh---use Samsung 18650 ... :over dischargeover chargeshort circuitAdvantages:Safety in useLight weight, small size and high performanceSmall internal resistanceHigh energy density, low self-dischargePollution free, long ...