Please fully charge the batteries before the first use. Read the operation manual before the first use.1、How to achieve a better mixing effect? Switch between mixing and pulse modes to achieve the best mixing results. Blend Mode: Click once power button to start blending and green light is on.Pulse Mode: Double-click power button to enter pulse mode and orange light is on.2、Is this portable blender waterproof? The portable blender base is removable and waterproof. It can be easily removed for cleaning without worrying about water entering through the charging port and damaging the battery. Tips:🥝If all the lights are red or not, and smoothie blender cannot be started. Please charge it for 3 to 5 hours to make sure the battery is fully charged.🥝The portable blender will not start when all the indicators flash red and green alternately.It's because the cup isn't fastened to the base.Tighten the cup and base to ensure that the arrowhead is aligned with the power button.🥝Stops working at startup and all lights flash for 8 seconds. Ingredients are too thick or too large, motor overload protection. Add some liquid or cut ingredients into small pieces, or switch to pulse mode and restart portable blender.🥝The leakage occurred because the seal ring was not properly placed. The can lid has cross thread, please reinstall the seal ring,restart portable smoothie blender🥝Check Battery Level1%- 17%：no lights18%-33% : 2 green lights on34%-50% : 4 green lights on51%-67% : 6 green lights on68%-83% : 8 green lights on84%-99% : 10 green lights onFully charged, all green lights on, red light off