Travel + Leisure recently reviewed our ChargeCard. Here's what they had to say:

A portable phone charger is one of the most valuable things to keep on you as a solo traveler, and yet — if you’re like me — it’s the thing you’re most likely to leave behind. Whether it’s because you forgot it or opted not to bring it to keep your belt bag light (been there), you’ve likely found yourself out and about in a foreign place with a phone on 1 percent battery and no clue how to get back to your hotel. 

Travelers say AquaVault’s Ultra-thin Emergency Phone Charger is the solution to lugging around a bulky external battery. It fits easily in a wallet to keep you safely tethered to the outside world as you navigate new places, whether you’re on your own or not.

About the size of a bank card, this compact charger has built-in Lightning, USB-C, and Micro USB cables, so it’s compatible with Androids, iPhones, iPads, Kindles, all kinds of headphones, and any other gadget you travel with. It’s stainless steel and packs a load of power into its 2 ounces. 

“This mighty little charger gets my Galaxy phone from 40 percent to 100 percent in less than 1.5 hours all while using my phone,” one reviewer wrote. “Plus, it's so easy to carry. It slips into a pocket and you'd never know it's there.” Another called it “a perfect travel companion.” It could get you out of a sticky solo travel situation, but people use it for emergencies even more serious than being on vacation with no GPS. 

“My grandson has type 1 diabetes and has a phone that he uses to monitor his blood sugar,” says one shopper. “My daughter needs to also monitor his blood sugar when he is playing a sport. Sometimes the sporting events last all day and finding a place to charge the phone is not fun.”

People say the palm-sized external battery charges their devices quickly and for a long time. It has a capacity of 2,300 milliampere-hours (mAh), which translates to about 1.5 hours of charge time. It’s also equipped with LED lights that tell you how much juice it has left.

The charger is designed to look just like a credit card. It comes in black and platinum, both regularly priced at $70 but marked down to $55 with Amazon’s $15-off coupon. 

So far, the power bank has an average rating of four out of five stars, with hundreds singing its praises in the review section. Frequent travelers are especially pleased with the product, one calling it the “best portable charger” and another saying it’s “a perfect travel companion.” It should no doubt keep you safe on your next solo adventure. 

Try the AquaVault Ultra-thin Emergency Phone Charger while it’s on sale or shop for others at Amazon, including some of Travel + Leisure’s top-rated portable chargers of 2024.