If you purchase an independently reviewed product or service through a link on our website, Rolling Stone may receive an affiliate commission. We rely on our smartphones now more than ever before, whether we’re trying to access our boarding passes, check directions, or pay for a coffee. Even though it’s great we can rely on our devices for a variety of reasons, it also has the potential to leave us vulnerable and stranded should our phones run out of charge while we’re on the go.

Enter the best portable phone chargers under $20, which keep your phone powered up without breaking the bank. Looking for a quick and affordable way to boost your battery on the go? We’ve scoured the internet for the best portable phone chargers under $20, based on reliability, battery life and design. $18.

99 $21.99 14% off While many of the best portable phone chargers have a credit card-like shape and design, the Anker PowerCore portable charger takes compact to another level. Like a tube of chapstick , this cylinder-shaped charger slips easily into your pocket and is a must-have travel essential.

It can provide over one full charge for the latest iPhone or Android, or up to two full chargers if you own an iPhone 8. One of the best-reviewed portable chargers online, this one boasts a 4.5-star review (out of five) from more than 30,000 verified shoppers online.

$9.99 Target’s in-house Heyday brand lands on our affordable chargers list with this slim but mighty workhorse, which delivers a w.