Quiet, portable power for when you're off-the-grid or faced with an unexpected outage. The Goal Zero Yeti 400 Generator produces a ton of juice without the noise and fumes of traditional back-up generators. The Yeti 400 gets charged from either a wall outlet, a vehicle's 12V port, or an optional solar panel (see the "frequently bought together" section on Amazon for the solar package). Once fully charged, it can power everything from an inflatable mattress to a CPAP machine. It can recharge a laptop up to 5 times. A digital camera over 20 times. A smartphone 30 times. A head lamp over 70 times. Outputs include 1.5 amp USB, 12 volt, and 300 watts pure sine AC inverters. The Yeti 400 averages 4 out of 5 stars on Amazon from over 350 people (read reviews). It's typical list price of $460 has been reduced a generous 19% to $375 on Amazon.