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The best 20,000mAh power banks you can buy

A 20,000mAh power bank can recharge most phones several times, so it's handy for a long trip.

Published onMay 16, 2024

Pixel 8a Charging
Paul Jones / Android Authority

A power bank is often the only option to keep your devices charged when you’re away from an outlet. You can get smaller portable batteries with 5,000mAh and 10,000mAh capacities, but 20,000mAh is the sweet spot since it’s enough to charge an Android or iOS phone several times over. Here are our recommendations for some of the best 20,000mAh power banks you can currently get your hands on.

Best 20,000mAh power banks

Editor’s note: We’ll continually update this list as new 20,000mAh power banks are announced.

1. Anker PowerCore III

Anker PowerCore III 20K mAh USB C Portable Battery Charger
Matt Horne / Android Authority

The PowerCore III offers two USB-A ports and one for USB-C. It charges at speeds of up to 20W, and it’s Qualcomm Quick Charge-enabled.

While Anker offers newer, faster 20,000mAh options like the 200W Prime Power Bank below, the PowerCore III should be more than enough for phones, and it’s a heck of a lot cheaper at $50 or less. It’s rare for smartphones to charge over 50W, and none of them come anywhere near the 200W mark.

2. Anker 200W Prime Power Bank

Anker Prime 27650mAh Power Bank

As mentioned, the Prime is probably overkill for phones, but with 200W total output, it can charge multiple devices at high speed including tablets and laptops. In theory you could charge two laptops simultaneously, each drawing up to 100W — just don’t expect to power a gaming system while you play. The bank is equipped with two USB-C ports and one USB-A connection.

Aside from its output, the main attraction here is its info display. This shows how much wattage each port is using, as well details like projected battery life, time to recharge, and the current operating temperature.

If you like, you can buy a bundle with a charging base that includes its own USB outputs.

3. Crave Plus Pro portable charger

Crave’s Plus Pro is a three-port option equipped with Fast Charge IC 3.0. Two ports are USB-A, and the third option is a USB-C port with Power Delivery for up to 45W of throughput. The power bank as a whole is only about the size of the average smartphone, so you should have no trouble stashing it in your backpack or even a pocket.

Once your Plus Pro runs out of charge, you can use the USB-C input to top it up in a hurry. At just about $100, the Plus Pro isn’t the cheapest option on this list, but its size and ports could make the difference for some buyers.

4. Samsung 45W 20,000mAh Battery Pack

Samsung does power banks as well as it does all of its tech, so the brand was always going to feature on this rundown. The Samsung 45W 20,000mAh Battery Pack provides Super Fast Charging 2.0 for quick power-ups with its included 5A USB-C cable. It has triple ports in case you need to top up three devices simultaneously, and the UL-certified recycled materials make it environmentally friendly. With a retail price of around $55, it isn’t going to break the bank.

5. Mophie Powerstation XL

At first glance, the Powerstation XL is a by-the-numbers portable battery. Like some other options here, there are two USB-A ports and a USB-C connection, The latter tops out at 20W, and so does the overall battery. 

Where the Powerstation XL really differs is in material choice. The fabric on the top and bottom is soft to the touch, which makes the battery both stylish and more pleasant to hold. Since you can get it for $40 as of this writing, it might be an easy choice over something like the PowerCore III.

6. Baseus 65W Power Bank 

Baseus is a familiar name in the charging industry, and this particular power bank is equipped with one 65W PD USB-C port and two 30W QC USB-A ports. A numerical LED charge indicator gives you a more precise idea of how much more power can be squeezed from the device, even if you’re not getting as much info as you would from the Anker or Omnicharge’s best products.

While it’s bulkier than Crave’s battery, it’s cheaper at around $60, and that 65W capability has a real impact. It’s enough to run some laptops, and the power bank itself can be refilled in just 2 hours. You’ll definitely be recharging most smartphones at top speed.

7. Omnicharge Omni 20 Plus

Omnicharge Omni 20 power bank

If you’re looking for a truly all-in-one portable battery, look no further than the Omnicharge Omni 20 Plus. In addition to two 18W USB-A ports, the Omni 20 Plus features a USB-C port with up to 60W of output capacity and 45W of input.

If you need even more juice, the Omni 20 Plus features an AC outlet with 100W output, enough to supply something like a MacBook Pro at full speed. The top surface of the battery, meanwhile, contains a 10W wireless charger you can rest your phone on.

A small OLED display shows how much charge is left, how much wattage is flowing out, and the estimated time left until the battery dries up.

Be warned that the Omni 20 Plus is relatively heavy. It you’re setting up a mobile workstation though, it could be exactly what you need.

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