Amazon has the Anker 2nd Gen Astro 16000mAh power bank for only $34.99 Prime shipped. When you add it to your cart along with the Anker Astro Mini 3200mAh Portable Power Bank and use the code M46XJXLC at checkout, The cost of the mini ($20) drops off your order. While we’ve seen the Astro for as low as $30 before, today’s offer is like getting the mini for only $5.

Both chargers have received 4.5/5 star reviews and feature PowerIQ charging technology that gives you the best charge for your device. The larger Astro can charge “the iPad Air more than once, the Galaxy S5 four times, the iPhone 5s over seven times and other smartphones multiple times.”

Looking for something a little smaller with more ports? Grab the popular Anker 2nd Gen Astro3 12000mAh 3 USB port battery w/ PowerIQ (below) for $39.99. Drop it down to $31.99 Prime Shipped  with coupon code ASTRO332. This 4.3/5 star reviewed battery can power 3 devices at once with up to 4A or 20W of power per port.

Anker-Astro3-12000

Anker® 2nd Gen Astro E5 16000mAh Portable Charger External Battery Power BankAnker® 2nd Gen Astro Mini 3200mAh Lipstick-Sized Portable Charger External Battery Power Bank with PowerIQ(TM) Technology for iPhone, Samsung, HTC and More

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