The Solar battery itself can be charged two ways, either by using direct sunlight or by plugging it directly into an electrical outlet. Once the Solar Battery is charged you may use it to charge other devices such as your cell phone or any MP3/MP4 device. You can also charge your device inchon the goinch by plugging it into the battery and leaving it under sunlight. High temperature protection. High solar-to-electric power transforming rate (15%+). Fast-charging of any mobile electronic devices. Professional overcharge protection circuit. Battery charging time 0 to full via solar energy: 10-15hrs; battery charging via DC - 5hrs. Click for Price @ Sears.com
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