The 6 Best Small Power Banks


Whether you’re away from home for travel, work, or play, the best small power banks can keep your favorite devices charged without taking up valuable space. They come in a range of battery capacities and compact sizes (some are small enough to fit in your pocket), so you can find a model that best suits your needs.

Generally speaking, the size of a power bank is related to its electrical capacity, which is measured in milliampere hours (mAh). In smaller models, the capacity of the power bank can range from 5000mAh to over 25000mAh – the higher the mAh, the more the power bank will be able to charge your device. Keep in mind, however, that you’ll get lower charges for larger electronics like laptops and higher charges for simpler devices like smartphones. Of course, the power bank itself must be charged first before it can power your devices, and the larger the capacity, the longer it may take. Essentially, you’ll have a charge time of 2.5 to 12 hours, depending on battery capacity. At a minimum, you’ll want a power bank that can fully charge a smartphone, with an extra battery to spare.

When it comes to portability, large capacity power banks are about the size of a smartphone, but if that’s more room in your desk or bag than you’re willing to spare, you can opt for slim and lightweight styles that are small enough to stick in your pocket. Note, however, that compact power banks are best kept for quick boosts rather than multiple full charges for different devices, as the mAh will be lower.

Typically, small power banks come with one or two USB output ports, so consider how many devices you want to charge. While most small power banks come with the micro-USB cable needed to charge them before you leave, in most cases you’ll need to provide the wall outlet, as well as your device’s charging cable.

After diving into power bank reviews and comparing sizes and specs, I’ve rounded up the best small power banks below, so you can charge your device in a snap.

1. Best Overall

  • Dimensions: 3.6 x 2.3 x 0.9 inches
  • Weight: 6.35 ounces
  • Capacity: 10000mAh

Boasting an ultra-high overall rating of 4.7 stars after over 67,000 Amazon reviews, the Anker PowerCore 10000 Power Bank has a 10,000mAh capacity and one of the smallest footprints on this list – more compact than a deck of cards. According to the brand, it can power an iPhone X with 2.4 charges, an iPhone 8 with 3.6 charges, and a Galaxy S9 with 2.2 charges. When the power bank itself needs to be recharged, you can get a full battery in about 4.7 hours. It has a single USB port to charge one device at a time and four small LED lights that display the percentage of remaining power. A micro-USB cable and travel pouch are included with the power bank, but you’ll need to provide your own cable if your device requires a different connection. Weighing just 6.35 ounces, it offers the best combination of power, portability, and reviewer approval.

A reviewer wrote: “I have to say I’m really impressed not only with how well it worked but also how QUICKLY it charged my Iphone XR! I didn’t expect it to charge so quickly, I had approx. 10% or so, I plugged it in, and in about 30-45 minutes…maybe an hour or so, I had a fully full charge!And the power bank still had enough for I believe , another 2 full charges.

2. The second

  • Dimensions: 4.21 x 1.3 x 1.3 inches
  • Weight: 4.8 ounces
  • Capacity: 5000mAh

Also from Anker, the PowerCore 5000 has a cylindrical design that’s a bit larger than a roll of mints, making it a very portable power bank option. Designed with a single port, it can power one device at a time, and depending on the brand, the 5,000mAh capacity can power an iPhone X with 1.3 charges, an iPhone 8 with 1.8 charges, and a Galaxy S9 with 1. ,1 loads. Power level is indicated by three small LED lights, and a micro-USB cable and pouch are included. When the power bank runs out of battery, it takes about 2.5 hours to charge.

A reviewer wrote: “Use it for a compact load (purse or pocket). I own a larger Anker model which is also excellent, but you can’t beat this for the compact dimensions. Highly recommend it for easy transport.

3. Best for charging 2 devices simultaneously

  • Dimensions: 6.2 x 2.9 x 0.76 inches
  • Weight: 12.3 ounces
  • Capacity: 20000mAh

With a capacity of 20,000 mAh and two output ports, the PowerCore Essential 20K power bank from Anker can charge two devices simultaneously. . There’s a micro-USB out port and a USB-C out port, and when used as a single-device charging solution, it can supply an iPhone XS with five charges, an iPhone 11 with four charges , a Galaxy S10 with almost five charges, and an iPad mini 5 with 2.5 charges. The power bank itself charges in around 10 hours and the battery level can be checked at the push of a button. Although it weighs considerably more than some of the other power banks here, it’s about the size of a smartphone and each unit is drop tested from 1 meter to ensure durability.

A reviewer wrote: “This is the third Anker portable charger I’ve purchased and again I’m happy with it. I like the dual charging port feature, I can charge two phones or one phone and one tablet at the same time. Charging time is fast! And with the laptop fully charged, I can use it for days before needing to charge it again. I always take it with me whenever I go on a trip – always good to have a Reliable portable charger at your fingertips!Highly recommend.

4. The best power bank with digital display

  • Dimensions: 5.3 x 2.8 x 1 inches
  • Weight: 12.8 ounces
  • Capacity: 20000mAh

With INIU’s portable power bank, checking your battery level is as easy as glancing at the digital LED display. Another powerful option, the 20,000 mAH capacity power bank can be used to power accessories and devices of all sizes, and it can power a Galaxy S20 with 3.4 charges, an iPhone 13 with 4.3 charges and an iPad mini 4 with 2.7 charges. It has two output ports and a USB-C input/output port, which means you can charge up to three devices at once. Of course, with this kind of power capacity, you’re looking at a power bank that’s a bit larger and heavier than the other options on this list. That being said, there is a built-in flashlight for even more convenience. This pick charges via an included USB-C cable, with a charge time of around 12 hours, according to a tester.

A reviewer wrote: “We took this campsite and it held a charge for days. We were able to charge our phones several times. The power percentage display was incredibly useful. Highly portable and TSA compliant.

5. Largest battery capacity

  • Dimensions: 6 x 2.75 inches, according to a reviewer (thickness not stated)
  • Weight: 8 ounces
  • Capacity: 25800mAh

If you’re looking for the highest charging power, Ekrist’s high-capacity power bank can hold 25,800 mAh, which the brand says is enough to fully charge any smartphone four to eight times and an iPad. Pro two to three times. While this number varies between manufacturers and devices, one Galaxy 8+ owner who reviewed the Ekrist claimed that he had 50% battery capacity left after charging his device. four times. The power bank has two USB output ports and one micro-USB input port, and it comes with a micro-USB cable. When it’s time to recharge the battery, it takes about eight to 10 hours to recharge the power bank.

A reviewer wrote: “I’ve had it for less than a month and it quickly became a necessity in my daily life; fits nicely in the side pocket of my backpack. The value of what you get is well worth it compared to other older, more expensive, lower mAh models. The average battery cycle will give me several full phone charges and only needs a charge once a week, more or less.

6. The Best Solar Power Bank

  • Dimensions: 3.3 x 2.95 x 0.9 inches
  • Weight: 8.4 ounces
  • Capacity: 12000mAh

If you are moving away from a reliable power source or want a backup in the event of a power outage at home, this is the best small solar power bank to help you keep your devices charged . It has a capacity of 12,000 mAh, which can be recharged quickly via USB cable (ideal for regular use), but you can also rely on the solar power function as a backup in the blink of an eye or to supplement it if necessary. (Also keep in mind that smaller solar panels like the one found on this device mean the power bank itself will charge slower in sunlight, so you’re trading power for size compact.) The brand says the power bank can charge five devices simultaneously and has four built-in cables: a USB cable, a micro-USB cable, a Type-C cable and a Lightning cable.

According to a reviewer, when fully powered, the power bank can charge an iPhone SE three to four times, but the brand doesn’t provide details on how many times it can charge any other phone model or of tablet. Also note that there is no mention of how long it takes to fully charge the power bank via a wall outlet or solar power.

In addition to its charger functionality, the bank has an LED that functions as a small flashlight.

A reviewer wrote: “It’s a great little charger. It charges fairly quickly via USB cable and has the added benefit of solar charging when stuck in a rut. This feature makes it great for travel. It’s a nice compact size and it comes with four handy cables already attached I can clip it to my backpack while hiking and it will charge I can leave it on my car dash while I drive and it will charge When I’m sitting at home and I’m too lazy to plug it into the wall I just place it near a window and it charges Solar charging isn’t very fast but it’s definitely a nice addition!


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