WindFire BC09 Dual Channel Battery Charger Universal Auto off Intelligent Battery Charger for 18650/18500/14500/26650 AA Lithium Battery Lifepo4 Battery USA Plug Black Dual-Slot intelligent charger LED indication.Indicator light : Red flashing (charging )--Green (finish charge) . Automatic identification and transformation, for all sorts of all kinds of 3.0/3.2/3.6/3.7 V lithium ion batteries, lithium iron phosphate batteries charging,filled automatically stops charging. Comprehensive protection function, short circuit is not charging when battery put wrong,eliminate to charging the common battery With 2 slots, Can charge 1-2pcs Li-ion cylindrical battery.