When we are travelling or camping in the outdoors， running out of battery is a very annoying thing. But if you have this DIY Solar Panel， you completely don&#39;t have to worry about that.<br /><br />Features:<br />Made of polycrystalline silicon， environmental friendly.<br />The solar cell is used for DIY charger or making experiments.<br />It can multiple series or parallel to produce electricity.<br />With portable size， easy and more convenient to use.<br /><br />Specifications:<br />Max. Power: 2.5W / 4.2W (Optional)<br />Color: Black<br />Material: Polycrystalline Silicon<br />Working Voltage: 18V<br />Open-circuit Voltage: 19.2V<br />Product Size: 2.5W: 194 * 120 * 3mm; 4.2W: 200 * 130 * 3mm<br />Product Weight: 2.5W: 85g / 3oz; 4.2W: 100g / 3.53oz<br />Package Size: 22.5 * 15.5 * 0.5cm<br />Package Weight: 97-112g / 3.45-3.96oz<br /><br />Note:<br />Due to manual measurement， slight error can be allowed; pls in kind prevail.<br /><br />Package List:<br />1 * Solar Panel<br><img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/H/1/H19080-1/H19080-1-1-a673-UrTN.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/H/1/H19080-1/H19080-1-1-a673-LJ4b.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/H/1/H19080-1/H19080-1-1-a673-bYSw.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/H/1/H19080-1/H19080-1-1-a673-VUd7.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/H/1/H19080-1/H19080-1-1-a673-XBpr.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/H/1/H19080-1/H19080-1-1-a673-QX6m.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/H/1/H19080-1/H19080-1-1-a673-eT6L.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/H/1/H19080-1/H19080-1-1-a673-rMHz.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/H/1/H19080-1/H19080-1-1-a673-Q5ub.jpg" /><br>