There are a lot of options.
Some are good. Some are bad. Most are just OK, with standard-issue looks and by-the-book features.
But if you really want the best one money can buy, consider this sleek, ultra-slim take from our friends at Tylt.
Yes, it has a rechargeable 6000mAh internal battery that can provide up to 3 charges. Yes, it looks especially cool in silver. And yes, that's a unique LED number readout displaying the remaining battery life. If you ever used a portable battery pack before, you know what a simple game-changer this is. No more guesswork involved. No tiny lights loosely indicating power levels. No confusion or "Is this actually charged?" moments. It's surprisingly blissful and makes times when you need portable power most a little less stressful.
We're not sure why the other guys aren't adding this feature to every power pack they manufacturer but we're certainly glad that Tylt did with this one. Score one today for just $49 and take an additional 20% off (for a limited time) by using the code AIROWS20.