The market has a great variety of devices that can charge gadgets, receiving energy from alternative energy sources. Solar panels are the most common of them. The Austrian startup SunnyBAG wants to launch the production of its camp batteries, their main advantage is that they are flexible, and the percentage of efficiency is 22.4%, which is the best performance among similar products, according to the developers. Portable SunnyBAG LEAF + weighs less than 200 grams, is equipped with a 4000 mAh battery and is not afraid of water and cold. The 6.2-watt product is designed to charge any mobile device with a USB port. The product is looking for investors on Kickstarter, and the project has already collected the required amount to start production. However, if the milestone of € 35,000 is reached, the authors promise to invest in each SunnyBAG LEAF + purchased a USB cable with a USB connector, an adapter with a Lightning connector for charging Apple devices, a 30-pin connector for old apple products, and a USB-C connector . A portable flex panel is now available for € 74. The release is scheduled for December this year.