Looking for a pretty massive battery charger? Well Anker has you covered with their 20,000mAh battery pack here. Yes that's 20 with three zero's behind it. That's a pretty massive battery pack, although not as big as this 50,000mAh battery pack. Right now the Anker 2nd Gen Astro Pro2 is on sale for $79. Now most of you may think that's expensive for a battery pack, but you have to remember that this is about twice the size of most other battery packs out there. PowerIQâ„¢ technology intelligently communicates with connected devices to maximize both compatibility and charging speed. Additional 9V or 12V port (Max speed of 4.5 Amps among 4 ports). Ultra-high 20000mAh capacity charges an iPhone ten times, a large-capacity phone like the Galaxy S4 six times and tablets several times. Energy efficiency rate 10% higher than the previous generation and many current standard alternatives adds additional usable power. Included 100-240V AC adapter recharges the battery in just 4-5 hours. Aluminum construction withstands drops and bumps; slim profile easily slips in your bag. LCD screen accurately displays power level, charging status and voltage selection. Package includes: Anker® 2nd Gen Astro Pro2 20000mAh External Battery, 100 - 240V AC charger, micro USB cable, 4.3 x 1.6mm to 5.5 x 2.5mm multi-voltage cable, user manual.
Anker® 2nd Gen Astro Pro2 20000mAh 4-Port Aluminum Portable External Battery Charger with 9V/12V Multi-Voltage Port and PowerIQTM Technology for iPad Air mini, iPhone 5s 5c 5; Galaxy S5 S4, Tab 2, Note, Nexus, MOTO X, G, LG Optimus, HTC One and More