This is what i have: (10) 27mm piezoelectric transducers (actual PZT crystal size is 18mm in diameter x .01mm? very thin), vibrated once per second. With each having varying output ranges of voltages from, 0.7 volts to 2.3 volts, after 2200 seconds. And utilizing a good harvesting module, storing the output to rechargeable batteries, Will i be able to use this voltage to charge a cell phone battery?