The Sun King™ Pro 300 is a true heavyweight among phone-charging solar lanterns. The Sun King™ Pro 300 features high-density NMC batteries with charging capacity sufficient for today’s battery-hungry devices, such as smartphones. The batteries also power its brilliant light, rated at 300 lumens – 30X brighter than a typical kerosene lamp. At its lowest levels of brightness, the Sun King™ Pro 300 provides 100 hours of light. This is the ideal lantern for the lighting and charging needs of your home or business.