To recharge your Poldina Pro Micro lamp, plug the USB terminal on the charging base into a 5V-1A USB charging plug adaptor (not included) or a USB multi-port charging station. Place the lamp on the base. The translucent top will glow red while charging and turn green once the charging cycle is complete. A full charge takes 3-4 hours. The lamp should be removed from the charging cradle when the battery is fully charged.