In our hyper-connected world, a dead device battery can feel like a minor emergency. Whether you’re navigating a new city, finishing work on a long flight, or simply making it through a heavy-use day, a reliable power bank is no longer a luxury—it’s an essential piece of gear for modern life.
But with so many options boasting different capacities, wattages, and features, choosing the right one can be a challenge. This roundup cuts through the noise to present nine of the best battery banks available, each selected for its ability to deliver dependable power wherever your day takes you.
Our Top Picks for Reliable Portable Power
- INIU Portable Charger, 20000mAh 65W Compact USB C Laptop Power Bank
- Anker Portable Charger, 325 Power Bank (PowerCore Essential 20K)
- Anker Prime Power Bank, 20,000mAh 200W Portable Laptop Charger
- SHARGEEK 140 Power Bank, 140W Output 20000mAh Portable Charger
- Anker 737 Power Bank, 24,000mAh 3-Port Laptop Portable Charger
- Jackery Portable Power Station Explorer 300, 293Wh Backup Battery
- Anker Power Bank(PowerCore 10K),Compact Travel-Ready 10,000mAh
- INIU 100W 25000mAh Portable Charger
- mophie powerstation pro with MagSafe
INIU Portable Charger, 20000mAh 65W Compact USB C Laptop Power Bank
This power bank from INIU is built with a focus on safety and high-speed performance. It supports a robust 65W output, which is powerful enough to charge a MacBook Pro 14″ at its full potential, significantly cutting down recharge times. The brand’s confidence in its quality is backed by an industry-leading 3-year warranty.
Beyond laptops, it offers fast charging for a wide array of devices, from the latest iPhones and Samsung phones to gaming handhelds like the Steam Deck. With three outputs, you can keep multiple gadgets powered simultaneously, making it a versatile companion for work and travel.
Anker Portable Charger, 325 Power Bank (PowerCore Essential 20K)
The Anker PowerCore Essential 20K is a reliable workhorse designed for everyday use. Its substantial 20,000mAh capacity can recharge a smartphone multiple times, ensuring you have enough power to get through long days away from an outlet. The inclusion of a bi-directional USB-C port adds convenience for both charging devices and recharging the power bank itself.
Anker’s proprietary PowerIQ and VoltageBoost technology work together to deliver optimized, safe charging for a wide range of devices. This model is a solid, no-fuss choice for anyone who needs dependable backup power for phones, earbuds, and other small electronics without the need for ultra-high wattage.
Anker Prime Power Bank, 20,000mAh 200W Portable Laptop Charger
For those who need maximum power in a compact form, the Anker Prime is a top contender. It boasts an impressive 200W total output, allowing it to charge power-hungry laptops and quickly top up phones, with the ability to boost an iPhone to 30% in just 15 minutes. A smart digital display provides real-time information on power levels and input/output.
Recharging this power bank is as fast as its output, thanks to 100W input that can refill the battery in about 75 minutes. Its TSA-approved capacity and compact design make it an excellent partner for frequent travelers who cannot compromise on charging speed.
SHARGEEK 140 Power Bank, 140W Output 20000mAh Portable Charger
The SHARGEEK power bank stands out with its unique transparent design and a screen that shows usage statistics. It delivers a strong 140W of power, with a 100W USB-C port capable of charging a MacBook Pro from 0 to 50% in roughly 40 minutes. This makes it a capable source of energy for demanding devices while on the move.
Housing advanced batteries, this unit prioritizes safety, longevity, and efficiency with minimal heat generation. Its 20,000mAh capacity is airline-safe and provides substantial all-day power for multiple device charges, helping to eliminate battery anxiety.
Anker 737 Power Bank, 24,000mAh 3-Port Laptop Portable Charger
The Anker 737 offers a larger 24,000mAh capacity paired with a high 140W output, making it suitable for extended trips and heavy-use scenarios. It can charge an iPhone over four times, providing ample power for you and your devices. The smart digital display is a key feature, offering real-time data on power usage and remaining recharge time.
With its GaNPrime technology and Power Delivery 3.1, this power bank supports rapid two-way charging. You can quickly recharge the unit itself or deliver a high-speed charge to compatible laptops and phones, ensuring you spend less time plugged into the wall.
Jackery Portable Power Station Explorer 300
For power needs beyond a phone or laptop, the Jackery Explorer 300 is a portable power station with a 293Wh capacity. It features two Pure Sine Wave AC outlets, providing stable and safe power for larger electronics like small TVs, drones, or camping lights. Weighing just over 7 pounds, it remains portable for outdoor adventures.
This unit is incredibly versatile, capable of recharging via a wall outlet, a car port, or an optional solar panel for off-grid power. With six ports, including a 60W USB-C port, it can recharge itself and power multiple devices simultaneously, making it an ideal centerpiece for camping trips or emergency preparedness.
Anker Power Bank (PowerCore 10K)
This Anker PowerCore 10K is designed for maximum portability. It’s one of the slimmest and lightest 10,000mAh chargers available, easily slipping into a pocket or small bag without adding significant weight. Despite its compact size, it still provides about two full charges for a modern smartphone.
Engineered for durability, it has been tested to withstand drops and resist scratches, making it a tough companion for an active lifestyle. It’s the perfect grab-and-go power solution for daily commutes or short trips where bulkier power banks are not practical.
INIU 100W 25000mAh Portable Charger
This INIU model provides a balance of high capacity and high speed. With a 25,000mAh battery, it offers even more charges than standard 20,000mAh models, ideal for long weekends or when you need to power multiple devices over a longer period. The 100W output ensures that even demanding laptops can be charged quickly.
Like other INIU products, it is built with a focus on safe, efficient charging technology. This power bank is a strong option for users who need extra capacity without sacrificing charging speed for their larger electronics.
mophie powerstation pro with MagSafe
For iPhone users invested in the Apple ecosystem, the mophie powerstation pro offers a seamless charging experience. Its built-in MagSafe connector allows for a secure, snap-on attachment to compatible iPhone models, providing wireless charging without the need for a cable. This makes it incredibly easy to attach and charge on the go.
The design is sleek and integrates well with Apple devices. It provides a convenient and clutter-free way to keep your iPhone powered, making it a favorite for those who prioritize simplicity and a perfect fit for their device.
Buying Guide: How to Choose the Best Battery Bank for Reliable Power On the Go
When I’m picking out a new portable power bank, the first thing I look at is capacity, measured in milliamp-hours (mAh). This number tells you how much juice the battery holds. For a quick phone top-up, a 5,000 to 10,000mAh bank is fine. But if I’m traveling or need to charge multiple devices, I aim for 20,000mAh or more. Remember, the actual power you get is less than the advertised capacity due to energy loss as heat during charging. A good rule of thumb is that a 10,000mAh bank can fully charge a phone with a 4,000mAh battery about two times.
Next up is the number and type of ports. I always check for at least two USB ports so I can charge my phone and earbuds at the same time. The port technology is crucial, too. Look for USB-C with Power Delivery (PD) if you have a modern phone, tablet, or laptop. It charges devices much faster than standard USB-A ports. For my older gadgets, I make sure there’s a USB-A port as a backup. Some high-capacity banks even include AC outlets for laptops or other electronics that don’t use USB, which is a game-changer for working remotely.
The physical design matters more than you might think. I prefer a slim, pocket-friendly design for everyday carry, but I’m willing to accept a heavier, brick-like design for a high-capacity model I’ll keep in my backpack. The build quality should feel solid, not flimsy. I also look for a clear LED indicator that shows how much charge is left, so I’m never caught by surprise. Some models even have built-in cables, which are super convenient, though I always check that the cable is the right type for my main device.
Finally, consider the charging input. How long does it take to refill the power bank itself? A model with a USB-C input, especially with PD, will recharge much quicker than one with a Micro-USB input. If I’m in a hurry, a fast-recharging power bank is a must. Extra features like wireless charging can be a nice bonus, letting me just drop my compatible phone on top without fiddling with cables. When I’m searching for the 9 best battery banks for reliable power on the go, I balance all these factors—capacity, ports, design, and charging speed—against my specific needs and budget to find the perfect one.
Frequently Asked Questions
Why is the actual number of charges I get lower than the power bank’s capacity suggests?
This is one of the most common questions I see. It comes down to energy conversion efficiency. No power transfer is 100% perfect; some energy is always lost as heat during the charging process. There’s also a small amount of power used by the power bank’s own internal circuitry. So, if you have a 20,000mAh power bank and a phone with a 5,000mAh battery, you might only get around three to three and a half full charges instead of four. Higher-quality brands often have better efficiency, meaning you get more usable power out of the same capacity.
Can I bring my power bank on an airplane?
Yes, you generally can, but there are strict rules you must follow. The key limitation is the energy rating, which is measured in Watt-hours (Wh). For carry-on luggage, most airlines allow power banks under 100Wh. You can usually find this on the label, or calculate it by multiplying the mAh by the voltage and dividing by 1000 (e.g., 20,000mAh x 3.7V / 1000 = 74Wh). Power banks between 100Wh and 160Wh may require airline approval. It’s critical to know that you are never allowed to pack a power bank in your checked baggage; it must be in your carry-on.
What’s the difference between Power Delivery (PD) and Quick Charge (QC)?
Both are fast-charging technologies, but they work differently. Power Delivery (PD) is a universal standard that uses USB-C and can negotiate higher power levels for a wider range of devices, including modern phones, tablets, and even laptops. Quick Charge (QC) is a technology developed by Qualcomm, primarily for older Android devices. When I’m looking for a new power bank, I prioritize finding one with USB-C Power Delivery because it’s becoming the industry standard and is more versatile for future-proofing my gear.
How should I store my power bank if I’m not using it for a while?
Proper storage is key to keeping your battery healthy. I never store it completely empty or fully charged for long periods. The ideal state for lithium-ion batteries is around a 50% to 60% charge. Find a cool, dry place away from direct sunlight. Extreme heat or cold can permanently damage the battery’s capacity. If you plan to store it for several months, I recommend checking the charge level every few months and topping it up to that 50% range if needed. This simple habit will help extend the overall lifespan of your unit.
Is it safe to leave my power bank charging overnight?
While most modern power banks have safety features like overcharge protection that stop charging once full, it’s a habit I try to avoid. Any electronic device with a lithium-ion battery has a very small risk of overheating, especially if it’s a cheaper, off-brand model. For peace of mind, I charge my power bank during the day when I’m awake and nearby. This practice also helps me keep track of its health and ensures I’m getting the most reliable power on the go from my device.