Abstract: A rechargeable nail dryer is provided. The rechargeable nail dryer with an added charge circuit provides a convenient use and reduces the expense of replacing one-time use batteries by charging a built-in rechargeable battery, and additionally minimizes a memory effect of the built-in battery by simultaneously performing a constant-current equalizing charge, a full charge, a floating charge, and a trickle charge. The rechargeable nail dryer includes a constant-current supplier for supplying a charge voltage by making a current for a rechargeable battery constant, a full-charge sensor for sensing a charge amount of the battery, a trickle oscillator for generating a driving signal of a trickle charge according to a full-charge detected signal generated from the full-charge sensor, and a trickle driver for trickle-charging a battery with a current supplied from the constant-current supplier according to a driving signal generated from the trickle oscillator.