OrderBorder offers the SoL Hybrid Power Pack for Apple iPhone 4 or 4S, model no. SOLIP4CASE, for $53 with free shipping. That's the lowest total price we could find by $7. This charger purports to triple your iPhone's life through its 2,400 mAh internal battery and integrated solar panel. It features an LED flashlight, three screen protectors, priority charging, and more. Deal ends April 10.