Amazon's early Prime Day deals are up to 90% off — here's my favorite power banks and chargers

Charmast 10,000 mAh Portable Charger: was $24 now $12 @ Amazon
With its compact design, 20W charging speed, and integrated charging that also doubles as a lanyard, this Charmast portable charger offers a lot of utility in a small package.

INIU Portable Charger: was $29 now $17 @ Amazon
The INIU 10000mAh Portable Charger is our top pick for the best power bank you can buy right now. Combining its compacr size, 10,000 mAh battery capacity, and two USB-A ports, it's the portable charger for anyone that needs on-the-go power.

INIU 10,000 mAh Portable Charger: was $32 now $18 @ Amazon
Big things come in small packages. That's certainly true with the INIU 10,000 mAh Portable Charger because it manages to fit two USB-A and one USB-C port into a design that's roughly the size of a playing card. Plus, there's a pull out holder that can hold your phone in place while it's charging. Note: Use coupon "KJZOZ5OO" to get this price. 

Anker 321 MagGo Battery: was $25 now $19 @ Amazon
For iPhone owners who need on-the-go charging, the Anker 321 MagGo Battery is a simple 5,000 mAh power pack that fastens to the back of the iPhone for convenience.

Newdery 10,000 mAh Portable Charger: was $39 now $23 @ Amazon
Flaunting a transparent design, the Newdery 10,000 mAh Portable Charger packs enough USB ports to charge several gadgets at the time, including an embedded Apple Watch charger. Click the on-page digital coupon to get this price. 

UGREEN 65W USB-C GaN Charger: was $39 now $27 @ Amazon
Prime members only! For powering most of your gadgets while on the go, the UGREEN 65W GaN USB-C charger has everything you need including two USB-C and 1 USB-A ports. Its compact design makes it an easy companion on your trips. Sign into your Prime account to see this price. 

iWALK MAG-X Magnetic Wireless Power Bank: was $39 now $31 @ Amazon
Part MagSafe charger for your iPhone, part Apple Watch charger, the iWALK MAG-X Magnetic Wireless Power Bank offers the convenience of charging your two favorite Apple gadgets simultaneously.

Mregb Portable Solar Power Bank: was $299 now $32 @ Amazon
It's not often you find a power bank with exception utility, nor this kind of discount. Yet, the Mregb Portable Solar Power Bank has it all, including a handy LED flashlight when you need it. And with its integrated solar panel, you can even recharge it with sun power.

Mophie 10,000 mAh Powerstation Power Bank: was $49 now $34 @ Amazon
More of a traditional power bank, the Mophie 10,000 mAh Powerstation has enough gas in the tank to give most phones two charges, all without being too bulky in size for travel.

Cuktech 30 Power Bank: was $199 now $119 @ Amazon
It's the biggest, most massive power bank on our list, but the Cuktech 30 Power Bank features a 40,000 mAh battery that's enough to power a MacBook Pro, so you won't need to rely on an outlet. There's also a built-in 20W wireless pad for your phone. Don't forget to apply the $30 coupon to bring it down to $119.

Anker Prime 27,650 mAh Power Bank: was $179 now $149 @ Amazon
Talk about power! The Anker Prime 27,650 mAh has a massive battery with up to 250W total charging power to even some laptops. There's even an integrated display to show you real-time charging speeds with all of its ports.