Rechargeable Unlike others, you'll be sent with an extension power cord we applied. The safest way to recharge is to use an extension cord and place the device on a concrete floor. Note: Please stand the unit up as shown in the image when charging. Do not block any of the holes Renewable & Efficient Absorbing capacity up 4oz to 6oz. When dry, the beads inside the device are BLUE and will turn PINK when wet. Then just renew the dehumidifier by recharging for 12-15 hours until the beads turn to BLUE again and reuse. This recyclable operation can last up to 10 years without replacing 100% Cordless Dehumidifier Get rid of moisture AND cords! No cables or batteries required. Just hang or place and go! Lasts up to 4 weeks before recharge.