> iPad batteries output 3.7v if I'm not mistaken, but I'm unsure what they charge with. For those not familiar with the tech, the term "3.7v battery" means tha

> iPad batteries output 3.7v if I'm not mistaken, but I'm unsure what they charge with. For those not familiar with the tech, the term "3.7v battery" means that it is about 4.2 volts when full. Black hole indeed.