Today only, PricePlunge offers the Medis PowerPak Xtreme Emergency Power Kit for $5.99. With $4.99 for shipping, that's tied with our March mention and the lowest total price we could find by a buck. This kit uses sodium borohydride fuel cells to provide light and charge cell phones during a power outage or camping trip. It features an 18-month inactive shelf life, one fuel-cell device, LED flashlight, four charging adapters including standard USB and mini USB, and more.