Rechargeable LED Wall Mounted Lights. LED wall mounted lamps built-in a 3000mAh rechargeable battery. The working time after full charge determined based on brightness. Fully charged less than 4hrs can work for up to 24hrs in medium brightness, maximum brightness is up to 15hrs. Portable cordless wall light sconces with USB-C charging port. NOTE: Please Install The Lamp Holder First And Bond It To The Wall For At Least 4 Hours Before Installing The Lamp Body. Wet Weather, Uneven Wall, or Dust May All Affect The Bonding Performance Of The Lamp Holder.