No matter how much the tech has advanced in the past 10-15 years, the battery life gets shorter and shorter. Yes, the batteries are more powerful but the modern devices drain if much faster. At home it’s OK but what if you take a trip to nature, hike or anywhere else where there is no power plug available? Then your best bet is this solar battery charger. It will charge your phone or tablets and other USB powered devices. Simply spread it on the surface, behind your backpack or even at home and let the sun shine on it. You will be able to charge four times faster than when using a USB port on your computer and you can basically charge your devices for free the entire day. We are living in 21st century, it’s time we finally start using solar power.