Mpow's high-capacity portable charger is on sale for $19 on Amazon

The Mpow 20000mAh Dual USB high-speed portable charger drops to $18.99 with code S58V7PM8 on Amazon. You won't find a whole lot of deals on this charger without codes similar to this one. It normally goes for $31 and does not vary much from that price.

The 20000mAh battery pack can charge your smartphone several times over. The high-speed charging takes only a couple hours to fully charge even larger phones. Can charge 2 devices at once. Comes with a 2 year warranty. Small enough for a purse.

With that ultra-large 20000mAh battery capacity, you'll be able to fully charge your smartphone and then some. Get several full charges out of it or just keep your favorite devices constantly topped off so the battery never runs low. It's up to you. Just keep the power bank in your backpack or purse, plug in when you're not using your device, and you may go several days before you ever have to plug into a wall.

Mpow has improved on a successful formula, too, making this battery pack much faster than previous generations. They claim as much as 23% faster with the ability to fully charge most smartphones in around two hours. With the double USB ports, you can charge two devices simultaneously so you get super speeds for more than one device.

Built-in safeguards will protect your new charger and your smartphone. It has multiple safety certifications and can prevent things like over-heating, over-voltage, short circuiting, and more.

The capacity might be huge, but the device itself is not. It uses an ultra-compact and lightweight design so it won't get in your way. It is even textured to provide a solid grip. Keep the charger in your backpack or your purse without taking up too much room. Mpow backs this up with a two-year warranty. Users give it 4.3 stars out of 5 based on 18 reviews.

Looking for more ways to keep your smartphone charged up? Try out this wireless charging pad that's also on sale. It's down to just $8 right now on Amazon.

John Levite
J.D. Levite has been in the deals game since 2012. He has posted daily deals at Gizmodo, The Wirecutter, The Sweethome, and now for Thrifter. He was there for the first Prime Day and has braved the full force of Black Friday. If you cut him, he bleeds savings. But don't try it for real. That's a metaphor.