A single solar rechargeable Ni-Mh battery powers the LED light of this adventurous gnome for up to 6 to 8 hrs. depending on light exposure level. The solar panel absorbs energy from any light source and the light sensitive photocell automatically turns the globe light on at dusk and off at dawn. Manual On/Off switch is included as well. 6 to 8 hours of charge time required for 6 to 8 hours of glow time.