The Sun King Foldable Fan features a 7650mAh, 3.7V Lithium Ferro Phosphate (LFP) battery (or in some 16-inch variations, an 11.1V, 5100mAh Lithium-ion battery). It delivers up to 18 to 24 hours of cooling on a single charge and includes a USB port to charge mobile devices.
The battery offers distinct runtimes depending on the power mode:
Low Speed: Up to 18 to 24 hours
Normal Speed: Up to 14 hours
Turbo Mode: Up to 9 hours
The battery is designed to last 5 to 6 years and is dual-charge capable. It can be fully recharged using standard AC grid electricity or by utilizing a solar panel (often sold with a 20W solar panel for optimal sun-powered charging)