Hi, i was just wondering if it's possible to charge a small battery with a small wind turbine? The turbine is just a coil of thin wire with a permenent magnet inside, the coil is only the size of a thumbnail. When i test for voltage across the turbine i get no voltage, which i'm assuming is because of the resistance on the multimeter i'm testing it on. I'm guessing if it will charge the battery, it'll take a while? The battery has around a 5v output. Sorry if i'm being vague, but i don't really know a lot about this. Any help would be appreciated.