Night Reading Lamp is powered by rechargeable 1200mAh lithium battery which is energy-saving, only need 3 hours to be fully charged. Cordless and portable, if outlets are limited and power outages, you can take the lamp anywhere with the freedom of camping. Night lamp provides bright but not too bright light for comfortable nighttime diaper changes without disturbing baby, getting up in the middle of the night to go to the bathroom, going downstairs for late-night supper, or as cozy ambience lighting for home entertainment for decoration, leisure.