Poweradd Pilot X7 20000mAh Power Bank Dual USB Port External Battery Pack with LED Flashlight $16.49 + FS w/Prime @ Amazon
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Huge Capacity 20000mAh - Add 8 solid charges to an iPhone 8, or about 4.5 charges to a iPhone X, or 4 charges to a Samsung Galaxy S8.
Smart USB Chargint Tech - Auto detects your device to deliver its fastest possible charge speed with 3.4A(max) output, we strongly suggest you to use a 2amp adapter to charge the Pilot X7 as the 5V/2A input.
Upgraded Size and Performance - Built-in Li-polymer battery cell, thus the new version Pilot X7 is much more lightweight and safe than previous version ones, supports more than 500 charge cycles as well.
Safety Guarantee - Built-in safeguards protect your devices against excessive current, overheating, overcharging and more.
Ultra-long Product Warranty - POWERADD Offers 30-Day money back within 24-Month limited product warranty, technical and friendly customer support are available lifetime.https://www.amazon.com/Poweradd-Pilot-X7-20000mAh-Flashlight/dp/B0157RHV8O?tag=phtwllt-20