Our top picks for portable power banks with fast charging

A power bank is simple in principle and surprisingly fiddly in practice. Our top picks for portable power banks with fast charging prioritise useful capacity, stable output, sensible size and the charging protocols used by modern Australian phones. We also consider how each model behaves in hot cars, crowded campsite power points and busy domestic airports.

Capacity is often advertised as the deciding number, but 20,000mAh does not guarantee two full phone charges. Voltage conversion, heat and a phone’s own charging limit all reduce the usable result. Look for the wattage and supported protocols as well as capacity: USB-C Power Delivery is more versatile than a quick-charge label on an older USB-A port.

Most current iPhones and many Android handsets in Australia use USB-C, yet the wall plug is usually an Australian Type I socket on a 230V supply. Check whether your cable supports the wattage you need, and remember that a cable sold only for data may carry power slowly. A multi-port bank can charge a phone and watch together, provided its total output is shared.

Prices on Amazon Australia and other marketplaces are normally shown in Australian dollars and include the 10% GST, but sellers can differ in warranty support. Check Australian availability, delivery dates and the manufacturer’s local service rather than relying on an overseas guarantee. A genuine product from a reputable seller should have relevant Australian safety certification and benefit from Australian Consumer Law protections when purchased here.

Our best overall portable power banks

Anker PowerCore 20K is our first choice for most buyers. Its 20,000mAh capacity sits in the useful middle ground, while the common version delivers up to 30W over USB-C and can charge two devices. It is easier to justify in a jacket pocket than a 140W brick, and its status display removes the guesswork from knowing when the bank is nearly empty.

Xiaomi 20000mAh 3rd Generation takes second place because it offers up to 65W of combined output, useful for quick top-ups and many smaller laptops. The trade-off is bulk: it is heavier and wider than the Anker, so it suits a work bag better than a jeans pocket. Confirm the port limits before buying, as Xiaomi can change specifications between markets.

Goal Zero Venture 35 is the rugged third pick, with a 35W USB-C output and an IP67-rated housing that is better suited to dust, splashes and a weekend outdoors than a slim desk model. It is still not waterproof, and its 9,600mAh capacity is closer to a single substantial phone charge than a multi-day reserve. It earns its place for durability rather than maximum capacity.

Power banks for laptops and tablets

For a laptop that can genuinely use USB-C Power Delivery, the Anker 737 Power Bank (PowerCore 24K) is the performance leader. Its 24,000mAh capacity is about 96Wh, and the 140W USB-C output can deliver serious speed to compatible machines. The display reports wattage, temperature and remaining charge, which is particularly handy when charging several travel devices.

That headline output is not a promise that every laptop will run at 140W. A phone may accept only 20W to 45W, a tablet may use a different profile, and a basic three-metre cable can become the bottleneck. For most working laptops, the Xiaomi model above is a lighter-value alternative, while the Anker 737 makes sense when speed and status information matter.

The EcoFlow River 2 serves a different need. It is a portable power station with a 256Wh battery, household-style AC output and a 300W inverter, so it can run a laptop, camera charger or small appliance at camp. At roughly a kilogram, it is not a pocket power bank, and its capacity also puts it outside the usual 100Wh cabin allowance for flights.

Power banks for road trips and Australian outdoors

Australian road trips create different demands from a commute. A bank with IP67 protection, a strong casing and a readable status screen is valuable on a dusty route to the Red Centre or Kakadu. If the trip involves a ute, durable rubber floor mats can also keep grit out of the footwell while cables, tools and spare batteries live in the cabin.

Heat is the bigger enemy in summer. A parked vehicle around Darwin or Uluru can exceed the safe storage conditions of a lithium battery surprisingly quickly, so keep the bank indoors, out of direct sun and away from a hot boot. Water resistance does not mean immersion, either. After a long day, give the bank time to cool before putting it back in a case.

Coverage gaps are common beyond regional towns, so a power bank should be a backup rather than your only navigation or communication plan. Pair a 20,000mAh model with a car charger, download maps offline and carry a small solar charger for multi-day trips. On domestic flights, spare lithium batteries generally belong in hand luggage with terminals protected; check Qantas, Virgin Australia or Jetstar for the exact rule.

Compact and value-focused choices

Smaller banks are helpful when every gram counts. Ten-thousand-milliamp-hour models from Anker, Belkin and Samsung typically fit in a small pocket and can cover an emergency top-up, though their lower capacity means fewer full charges. Look for at least 20W USB-C output if you want meaningful fast charging, rather than treating the compact size as proof of modern performance.

The value sweet spot is usually 20,000mAh. It provides a useful balance for commuting, festivals and travel without the weight of a mini power station. Anker is often easier to support locally, Xiaomi offers more output for less, and unknown labels can save money but carry greater uncertainty over cell quality, protections and warranty. The lowest sticker price is not always the lowest cost per usable watt-hour.

Cold also reduces lithium performance, so keep a compact bank close to your body during an alpine trip rather than leaving it in a cold pack. If the trip involves cold-weather clothing rather than an Australian summer, outdoor apparel bargains are another category worth comparing before departure. For summer use, a ventilated pouch and a short USB-C cable are more useful than extra insulation.

Choose, charge and maintain your bank safely

Start with the devices you need to support. A commuter can prioritise a 10,000mAh USB-C bank, while a frequent flyer may prefer two 20,000mAh options for redundancy. Laptop users should check voltage profiles and whether their computer accepts USB-C charging at the offered wattage. Count the cables too: owning a fast bank with a slow or damaged lead is a frustrating waste.

Treat capacity, output and weight as separate scores. A 140W rating matters only if the target device uses those levels; a 30W bank may charge a phone just as quickly and consume far less space. Check for over-temperature, over-current and short-circuit protection, plus credible Australian safety certification. For longer-distance driving, broader vehicle care resources can support general trip preparation beyond battery capacity.

Whichever model you choose, use a quality cable, avoid leaving it at zero for months, and inspect it for swelling or heat before every trip. Our top pick for most people is the Anker PowerCore 20K, while the Anker 737 is the stronger choice for compatible laptops and the Goal Zero Venture 35 suits rugged trips. Compare current Australian prices, check the local warranty and stock, then choose the bank that matches your devices and route.