Amazon offers the Anker Astro E4 13000mAh External Battery Pack Portable Power Bank Charger for iPhone 5 (Lightning Cable not included) and other devices on sale for $39.99 plus free shipping. Price is subject to change.

What makes this deal hot:
You save $80 off the retail list price. That's the lowest price we could find. No tax in most states.

What this does & Why you need it:
This Portable Power Bank Charger for iPhone 5 (Lightning Cable not included) and other devices features include Huge capacity (13000mAh), simultaneous charging, dual USB ports (5V / 2A and 5V / 1A), Built-in flashlight, lithium-ion battery ensures 500+ recharges, and more.