There is one thing that makes us panic with a smartphone is to hear the low battery notification, especially if we do not have a charger nearby. What to do? With these five tips, you'll know how to charge your battery without charger and electricity at all. 1. Charge your smartphone with your voice If the first reaction you have when you see that your smartphone battery at zero is screaming, do not hold back, shout! Your screams will be good for your battery with the device developed by Sungkyunkwan University in South Korea. The first prototype is capable of generating electricity 50 mV … [Read more...] about 5 ways to charge your smartphone without charger