The best power banks of 2024 in Australia: the top portable chargers from Anker, ZMI, INIU and more

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REASONS TO BUY
REASONS TO AVOID
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Power banks are an almost must-have accessory these days, as they offer the easiest way to keep your phone and devices charged when on the go. Power banks come in all shapes and sizes, from compact 10,000 mAh models that are great for quick top ups, through to 20,000 mAh or larger models that can charge a laptop and are ideal for travelling.

Knowing which power bank brands you can trust is very important, as the market is flooded with low-quality products with fake capacities or terrible efficiencies. Every power bank we recommend is rigorously tested to uncover even the smallest flaws. We include the top brands such as Anker, ZMI, Ugreen, INIU, Romoss and Baseus, as well as some hidden gems from lesser known brands.

Power banks come in all shapes and sizes, and larger capacity does mean more weight. But a slim power bank might be ideal for a pocket, whereas a square or blocky shape is better suited to a bag. MagSafe wireless chargers are great for charging an iPhone, but now MagSafe cases are available for everyone you can also use them on other brands such as Pixel phones. We also feature power banks that support fast charging – including for Samsung phones, laptops or gaming devices such as a Steam Deck. And don’t worry, all the power banks we recommend are flight safe so can be taken along on your next trip.

In our reviews below, we will tell you how many charges a power bank will give your phone or laptop, as well as if it does fast charging. We also test other features, like pass-through charging and low current mode. The specs listed on marketplaces such as Amazon are often not very accurate, so we check every last one, and measure the dimensions and weights ourselves.

If you want more information on how to tell what power bank you need, what protocols your device uses, or just want to know more about how to compare power bank capacities, skip to our detailed FAQ at the end of the page.  

Recent updates

May 6, 2024: With new products hitting the market, we've updated some of the categories in this buying guide with the latest power banks where necessary. We have also included additional testing results and buying options. 

Written by
Lindsay Handmer Author Bio Picture
Written by
Lindsay Handmer

Lindsay is a long-serving contributor to TechRadar, handling testing and reviews for a wide range of products. He started out with a career in electronic repair before finding a love for writing and product reviews, and pivoting into the media industry. He is trying to collect and test every single power bank available, but is otherwise usually found tinkering with electronic projects such as off-grid solar power or boating Australia’s magnificent waterways.  

The quick list

Want to skip straight to the good bit, and find out which power banks are the best? Take a look below, then check out the detailed review and testing results further down the page. If there's one that suits your needs, our price comparison tool will help you find the best deals.

The best power bank of 2024 in Australia

Why you can trust TechRadar We spend hours testing every product or service we review, so you can be sure you’re buying the best. Find out more about how we test.

Below you'll find full write-ups for each of the best power banks in our list. We've tested each one extensively so you can be sure that our recommendations can be trusted.

The best power bank overall

1. ZMI No.20 (QB826G)

The best power bank you can buy in Australia

Specifications

Capacity: 25,000 mAh (90.75 Wh)
Total Wattage: 210W
Single Port Wattage: 100W
Number of Ports: 3
USB-C: 2x in/out ports
USB-A: 1 port
Dimensions: 18.8 x 8.1 x 2.8cm
Weight: 580g
Phone Charges: 3 to 5 times

Reasons to buy

+
High capacity
+
Laptop charging
+
Premium quality

Reasons to avoid

-
On the larger side 
-
Limited buying options 
-
Scratches easily
Buy it if

✅ You need to fast charge a laptop: The 100W USB-C output is perfect for power-hungry devices.

 You need a large capacity power bank: The No.20 has a large 25,000 mAh capacity.  

You use your power bank a lot: The quality components in the No.20 make it ideal for heavy use.

Don't buy it if:

❌ You need a pocket size power bank: The No.20 is on the larger size and best suited for slipping into a bag. 

You want a detailed display: The No.20 tells you the remaining capacity, but doesn’t show extra details such as
output wattage. 

Featuring a large 25,000 mAh (90 Wh) capacity and a high 100W single port output, the ZMI No.20 is perfect for meeting your varied on-the-go charging needs. The power bank has two USB-C input / outputs – the first USB-C port outputs or charges at 100W (20V, 5A), while the second is limited to 45W (20V, 2.25A) in or out. The third port is USB-A and can also do up to 100W (20V, 5A) for PD spec devices such as laptops, but only with the included ZMI USB-A to USB-C cable. All up you can pull 210W, which means there is no issue fast charging one or more laptops, phones or other devices at the same time.

The No.20 also supports pass-through charging and UPS mode, and has a low current device charging mode. Remaining capacity is shown with a simple light-up percentage display that's easy to read in the sun but a bit bright at night. The plastic build means it’s not too heavy at 580 grams, and while 18.8cm long and 8.1cm wide, the 2.7cm thickness and curved edged makes it easy to slip into a bag. The power bank is quite robust if dropped, but the shiny finish will scratch fairly easily.

In testing, the No.20 could output 87.9% of its capacity at 20V, and 84.9% at 9V, which is an above-average efficiency. Using the two USB-C ports, the ZMI will happily sustain 100W or 100W+45W output without overheating, and runs cool enough to be left in a bag for slower laptop or phone charging. Importantly, the two USB-C ports are 100% independent, which means one won’t disconnect and renegotiate power levels if a new device is plugged into the other USB-C port. Using a 100W charger, the No.20 takes 1.5 hours to recharge, or around 2.5 hours if using the 45W input.

The 210W rating is 20V, 10.5A total using both the first USB-C port and the USB-A port with the ZMI cable. Connecting two 100W laptops works fine because while power use peaks near 200W, the average power use is much lower. UPS mode works well, but it only applies to the USB-C ports (or USB-A at under 12V) so is limited to either 45W output and 100W charging, or 45W charging and up to 100W output. While not overly compact for its capacity, the ZMI isn’t too large either. The ZMI uses high-quality Samsung 21700 cells (INR21700-50E), so is ideal for long-term heavy use.  

Swipe to scroll horizontally
TestUsable CapacityEfficiencyScore
10W (5V, 2A)75.3 Wh85%4 / 5
20W (9V, 2.22A) 76.2 Wh86%4 / 5
100W (20V, 5A)78.2 Wh88%4 / 5

The best budget power bank

2. INIU B6

Best power bank for tight budgets

Specifications

Capacity: 10,000 mAh (37 Wh)
Total Wattage: 20W
Single Port Wattage: 20W
Number of Ports: 3
USB-C: 1x in/out
USB-A: 1 port
Dimensions: 13.6 x 7 x 1.5cm
Weight: 210g
Phone Charges: 1 to 2 times

Reasons to buy

+
Slim and lightweight 
+
Efficient 20W fast charge
+
Built-in stand and torch 

Reasons to avoid

-
Easily scratched 
Buy it if

 You need an affordable power bank: The B6 offers great specs considering the bargain price. 

 You plan to charge a phone: The 10,000mAh capacity and 20W output is perfect for topping up on the go. 

Don't buy it if:

❌ You want to charge a laptop: While great for phones, tablets and other handheld devices, a higher output power bank is needed for laptops. 

❌ You charge heavily every day: The B6 has a great three-year warranty, but those looking to drain it every day should consider a premium power bank. 

The INIU B6 offers a lot considering the affordable price tag, with a 10,000 mAh (37 Wh) capacity and a 20W (9V, 2.22A) PD 3.0 output, which will fast charge most phones between 1-2 times. The B6 measures in at 13.6 x 7 x 1.5cm, and weighs 210 grams, which is better than average size vs capacity, making it ideal for slipping into a pocket, purse or bag. 

The B6 has a single USB-C port, as well as two USB-A ports and a large easy-to-read capacity display. In the box you get a USB-A to USB-C cable and a carry bag – the latter is handy as the soft-touch coating on the B6 is great to hold but prone to scratches. The soft-touch coating also holds fingerprints and fluff and we do worry if it will go sticky in a few years. The power bank has a useful torch built in – but it's not very bright – and it can be turned on by double pressing the power button. The B6 also has a pull-out phone holder to turn the power bank into a stand when charging. 

The B6 has excellent voltage accuracy and can output 85% of its rated capacity at 20W (9V, 2.22A) and an even better 91% at 5V. These are very impressive results considering the affordable price. The B6 also supports PPS mode from 5V to 11V, at 2A, and 5V to 5.9V at 3A, which allows compatible phones to charge faster and more efficiently. We have given our test B6 extended cyclic testing with no appreciable capacity loss, but it’s worth noting INIU offers a generous three-year warranty.

For those who like the look of the B6 but need a larger capacity, the INIU B5 has the same number of ports, voltages and amperage as the B6, but has a 20,000 mAh (74Wh) battery. It includes the same torch, but no phone holder, and measures in at a larger 13.5 x 7.1 x 2.5cm and weighs 362 grams.  

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TestUsable CapacityEfficiencyScore
10W (5V, 2A)33.6 Wh91%4.5 / 5
20W (9V, 2.22A) 31.5 Wh85%4 / 5
18W (12V, 1.5A)32.5 Wh82%3.5 / 5

The best premium power bank

3. Anker 737 (PowerCore 24K)

The best power bank for high power 140W laptop charging

Specifications

Capacity: 24,000 mAh (86.4 Wh)
Total Wattage: 140W
Single Port Wattage: 140W
Number of Ports: 3
USB-C: 1x in/out, 1x out
USB-A: 1 port
Dimensions: 15.7 × 5.5 × 5 cm
Weight: 630g
Phone Charges: 3 to 5 times

Reasons to buy

+
140W (28V, 5A) fast charging 
+
Premium build quality
+
Feature packed screen

Reasons to avoid

-
Premium price tag
-
Thick form factor
-
Heavier weight
Buy it if

✅ You charge a laptop a lot: The 140W output on the 737 is ideal for power-hungry devices.

✅ You value premium features such as the display: It’s very useful being able to check the exact wattage being output by the 737.  

Don't buy it if:

❌ You just want a cheap option for occasional use: The 737 is well worth the price tag, but only if you need all the features.

You want a slimmer power bank: The large capacity and square form factor mean the Anker 737 won’t suit all bags.  

The Anker 737 is one of only a few premium power banks that caters to the latest high-end laptops with the ability to supply up to 140W (28V, 5A) from the main USB-C port. The 737 is also great for charging phones and other devices, and the second USB-C port does up to 100W (20V, 5A) output, while the USB-A does 18W (9V, 2A). The 737 supports phone charging at 27W (9V, 3A) as well as PPS 5A (3.3V – 21V) for wide compatibility and the fastest possible charging with most devices, including Samsung fast charging.

The 630 gram Anker 737 uses a chunky rather than thin form factor, but we found the 15.7 × 5.5 × 5 cm dimensions were only an issue in slim laptop bags. The power bank has an excellent colour screen that displays remaining capacity, as well as other handy info, including battery health and overall usage stats. In use, the screen tells you the wattage from each port, which is a very useful way to double check if a device is charging correctly. The 737 also includes a low-current device charging mode that's activated by double pressing the power button. Notably the Anker 737 does not have PD spec 12V output from the USB-C ports.

The 737 had no problem sustaining 140W, but does get rather warm. Efficiency suffers a little with sustained high wattage, but voltages remain rock steady. At 140W (28V 5A) 85% of the rated capacity is available. At a more common 100W (20V 5A) an excellent 89% of the rated capacity is available. Phone charging at 9V 20W, an almost-as-great 87% of the rated capacity is available. Charging from the USB-C ports is most efficient, and the USB-A port gives 70.5Wh (81.5% of rated capacity) at 5V 2A, vs 74.2 Wh (86%) from USB-C.

Impressively the 737 can charge itself at 140W in a bit under an hour, while charging at 100W, it takes closer to 1.5 hours. The 737 will pass-through up to 90W of power, but won’t charge itself at the same time and does not have a UPS mode. The 737 uses quality 21700 cells and monitors battery health, so is ideal for heavy daily usage. 

(We have seen evidence that suggests Anker will update to a Gen 2 version of the 737, and add 12V/3A PD spec output to improve compatibility with drone battery chargers. We will update this review once we can confirm.)

Swipe to scroll horizontally
TestUsable CapacityEfficiencyScore
10W (5V 2A)74.2 Wh86%4 / 5
20W (9V 2.22A) 75.3 Wh87%4 / 5
100W (20V 5A)77.1 Wh89%4 / 5
140W (28V 5A)73.1 Wh85%4 / 5
10W (5V 2A) (USB-A)70.5 Wh81.5%3.5 / 5

Best Compact 140W

4. Ugreen 145W (PB205)

The best compact high-wattage power bank

Specifications

Capacity: 25,000 mAh (90 Wh)
Total Wattage: 145W
Single Port Wattage: 140W
Number of Ports: 3
USB-C: 1x in/out, 1x in
USB-A: 1 port
Dimensions: 15.8 x 8.1 x 2.7cm
Weight: 505g
Phone Charges: 3 to 5 times

Reasons to buy

+
 Compact size considering the large 90Wh capacity 
+
 Mighty 140W (28V, 5A) laptop charging 

Reasons to avoid

-
 Runs hot at high output 
-
 Slower 65W input for self-charging
Buy it if

✅ You need a large capacity but compact power bank: The Ugreen 145W is smaller and lighter than its similar capacity competition.

✅ You want a premium device for less than top dollar: The Ugreen 145W power bank is often on sale for a great price. 

Don't buy it if:

❌ You need to charge your power bank in a hurry: The Ugreen will only charge itself at 65W. 

 You want to charge a laptop in a bag: Despite excellent efficiency, the compact size of the Ugreen power bank does mean it tends to run hot at 100W and over. 

While not a name that everyone is famil