Welcome to power outage peace of mind. The Eton BoostTurbine 2000 hand-cranked backup battery ($60) can charge any USB-equipped device without a single jolt of electricity. Fast and efficient, in one minute the hand turbine power generator can produce enough power for about 4 minutes of talk time and a few critical texts. When fully charged, BoostTurbine 2000 fully charges most smartphones twice. You’ll appreciate the peace of mind this backup battery charger provides in situations when you are without power, but may need to charge your phone to make a call or text.