Chi-qoo DIY Solar Battery Charger Kit Easy to assemble DIY kit (glue and #01 philips screw driver required) Two USB ports with up to 1.5A output Charge from AC adapter or up to two 5W solar panels. One 5W panel in good sunlight will provide enough power to recharge a smartphone once. High capacity 6000 mAh Lithium Polymer battery is big enough to recharge most phones 3-4 times Charges and/or powers iPhones, iPads, Android phones and tablets, Kindle, USB reading lights, Raspberry Pi, Arduino, Steripen water sanitizer, PSP Portable, and much more.