> I don't think swapping batteries is a good analog for fast recharge. For one, the cost of a kilowatt hour in AA batteries well exceeds $100 Who said that you

> I don't think swapping batteries is a good analog for fast recharge. For one, the cost of a kilowatt hour in AA batteries well exceeds $100 Who said that you can only swap new/non-rechargable batteries? > Swapping batteries is also significantly more effort than plugging in a microUSB or whatever. Yes, but you can swap batteries where there's no power. You're not willing to carry a spare set of batteries yet you insist that you're willing to carry a charger....