This Mini Universal Solar Powered iPhone Charger drops from $17.32 to $12.99 at Mini In The Box. Plus, shipping is free. This is $10 under the price we found for similar ones even before the free shipping. It's compatible with iPhones, iPods, Android phones, and USB devices. If it's not being solar powered, it can still work as a charger via USB port on your computer. Note: you must uncheck the "shipping insurance" box during checkout to avoid a $1.99 fee. Sales tax is not charged in most states.