Solar Backpacks suppliers 鈪? Description The removable large size 30W camouflage solar hiking backpack can achieve emergency charging, it has three folds which is more efficient than single solar panel attached in the backpacks. You can enjoy the free and unlimited power source and no need to worry about the lack of durable power! After testing, the charging speed is much faster than other solar charging products on the market, it`s about 3 hours to fill a 3000mAh mobile phone battery. Considering that cloudy and overcast weather can reduce its charging efficiency, it is equipped with a mobile power supply with high safety performance. It is convenient to store electricity in sunny days. Of course, the mobile power supply can be charged with a power adapter or USB. - Working Principle The appearance of solar backpack looks like a bread, but with a piece of solar panel in front of the bag. The solar panels are made by monocrystalline, it will absorb the solar energy and converts it into electrical charge. Finally, the electrical charge people asked to borrow chargers outside their homes 65% need to reach out to family or colleagues 55% look for restaurants to use their outlets To avoid the anxiety of low battery, prepare one solar hiking backpack or solar charger is necessary! Solar Backpacks suppliers website:http://www.tongsolar.com/outdo....or-solar-products/so