1.Strong Safety: LYILIN 18650 Smart Charger is made of fire retardant materials, Intelligent Circuits and Worldwide Insurance,High quality and durable,long life 18650 battery charger. 2.Dedicated Charger: The only designated 18650 lithium battery charger, faster and more professional. 3.Super Smart: The charger will charge the battery when plug in,and the indicator light display in red,then turn into green after fully charged. 4.Battery Protection: Automatically Detect battery Status, Select Charge Mode, Cut Off Power at Full or Overtime, With overcharge / discharge protection function that you can use this battery pack Charger without worry. 5.What you get: LYILIN 18650 Charger, 24 Hours Warm Service, 30 Days Free Refund, 2 Years Free Replacement, Lifetime Maintenance.