If you head over to Amazon today and apply coupon code 85R7SWS8 to this monster RAVPower USB Power Bank, you’ll get it for just $32.99. That’s a solid $17 price drop and a match for the best we’ve tracked. It can charge up to 3 devices at a time (combined total output of 5.5A) and features a massive 26800mAh capacity. This size power bank could charge your phone, tablet and pretty much every other USB device you own throughout a week-long camping trip without a problem. More than 2,00 Amazon reviewers rate it 4.7 out of 5 stars.