When it comes to keeping your smartphone batteries charged there are a few things you can do to help prevent the battery from dying on you at some point during the day before you have a chance to plug it back in. You can either ensure you have a phone whose battery will last an entire day and then some, keep portable wall chargers or car chargers on you, or you can carry a battery pack with you. In terms of battery packs Anker is one of the best brands out there, and right now you can pick up the PowerCore II 20,100mAh power bank for just $36 by entering a code at the checkout screen that will discount the regular $49.99 retail price.
The PowerCore II 20,100mAh power bank as the title describes comes with a 20,100mAh batter capacity, and it has two open USB ports for plugging in cables to charge up to two devices at once. It also has a USB Type-C port although this is just for charging the power bank itself. On the top of the power bank you can find a power button to turn it on, and surrounding the edge of this button are little LED lights that will indicate how much battery power is left on the power bank. It also uses Anker's PowerIQ 2.0 tech which helps to identify how fast of a charge your device will accept so it can charge your device up as quickly as possible.