Eton Boost Turbine 2000, handcrank power generator

The Eton Boost Turbine 2000 is a must-have for emergency preparedness, probably the best battery booster for your mobile devices besides actually having spare batteries. The Boost Turbine 2000 features a rechargeable lithium battery, and a handcrank power generator which can generate power for emergency situations (e.g. a text or a quick call). Depending on the model - the 2000 ($39), 4000 ($59), or 6000 ($99) - the device can fully charge a smartphone once up to three times (the 6600 has the capabilities to simultaneously charge a smartphone and a tablet).