Tianma Technology&reg;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 chargerPerfect support for various types of rechargeable batteries, such as 18650/18500/14500/26650/16340 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. Red light stands for charging status and green light for fully charged, stop charging automatically 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