Amazing HD OLED Screen plus 6 Bays plus BLUETOOTH Connectivity for detailed charge information. This is the next generation of smart battery charger offered by Effect. Structure Instruction 1. OLED screen is to display charging status of each slot 2. The OLED will display the charging status of the selected slot with a press. Each slot with a build-in LED indicator, "FULL" is long on, "CHARGING" is slow flashing, and "NOT WORKING" is off 3. Multifunction button: to turn on/off the OLED screen light, to display the Blu6s serial No., to choose the charging current with selecting slot button 4. The Battery slot is capable of charging 6 batteries at the same time, adjusting the spring to insert different size batteries. OLED Screen Instruction 1. It display the charging status of each slot cyclically (slot No., voltage, current and charging mode), and each slot keeps showing in 3 seconds. Selecting display modeï¼špress a slot button when the screen is in cycle display mode, and it will switch to show the selected slot immediately and keeps in 5 seconds, then back to cycle display mode. 3.Night energy-saving modeï¼špress the multifunction function button to turn off the screen light (still in charging condition) when its in cycle display mode, press again to turn it on and back in cycle display mode. 4. Charger ID display modeï¼špress the multifunction function button for 5 seconds to show the Blu6s serial No. When its in cycle display mode. Connect your phone with the charger via this ID.