Update: The $4 coupon is gone, but you can still get it for $20 with code KINJA802.
The Anker PowerCore Fusion is one of our biggest sellers ever, because it combines a USB wall charger and a portable battery pack into a single product. Now, RAVPower has their own alternative with a slightly larger 6700mAh battery inside, and
you can grab it for just $16 after clipping the $4 coupon and using promo code KINJA802.
RAVPower sent me one to check out, and despite the larger battery inside, it’s barely bigger or heavier than the Anker, and a no-brainer purchase if you don’t already own a product like this. For example, I use one at my mother in law’s house, where there’s no outlet near my nightstand. I just plug it into an outlet on the other side of the room during the day, and come bedtime, I just bring it over and use it as a battery on my nightstand, where it has enough juice to recharge my phone and Apple Watch.