Chargeyour batteries with the Efest LUSH Q4 Charger. The Efest LUSH Q4 Charger is a quad slot charger with which automatically charges at a fast 2.0A charge with a single battery, a 1.0A charge with two batteries and a 0.5A charge with three or four batteries. This Lush Q4 features a simple no button design with a battery life LED indicator light The LED indicates when your battery is charging and when the battery is fully charged. Each slot is monitored independently to provide the most efficient charge. The Efest LUSH Q4 Charger features reverse polarity, short circuit, overcharge protection and many more safety features. The Efest LUSH Q4 Charger can charge different types of 3.6V/3.7V lithium batteries commonly used in electronic cigarettes, flashlights, electric tools, and more.