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CNN
3 days ago
- Business
- CNN
I don't leave the house without this portable charger, and you shouldn't either
I can't remember the last time I worried about my phone's battery life. No matter if I'm on a trip, cheering at a live event or just enjoying a night out on the town, I've always got enough juice to keep scrolling. I don't constantly micromanage my charge before I leave the house, either: I just pack the Anker Nano Power Bank. This portable charger basically lives in my fanny pack, and it's small enough to fit in my pocket or a bag if the evening calls for different attire. Look at the Anker Nano and you'll begin to understand its allure pretty quickly. Its built-in USB-C cable makes recharging your phone easy and convenient. On top of that, its 10000mAh capacity means I don't have to recharge it often and that it's got more than enough juice for me and a friend on a night out. Plus, it has additional USB-C and USB-A ports, so I can refuel my noise-canceling headphones and Apple Watch at the same time if I need to. Anker Nano Power Bank An ingenious looped USB-C cord design and enough juice to recharge multiple phones makes this portable charger an essential for everyone on the go. Those looking to charge the iPhone 14 or older should get the version with a Lightning cable. I've lost count of the number of times my colleague and senior tech editor Mike Andronico has asked if he could borrow my Anker Nano because his phone was running low on juice. It's not that he's bad at recharging his phone; he just knows I keep this portable charger on me. I'm not the only one either, as our senior deals editor Rikka Altland also praises and rocks this pocketable power bank in her daily carry. If someone didn't know better, they'd think this small, colorful plastic rectangle were vital to my life the way I clutch it so covetously. Let me tell you why I'm so addicted to Anker's take on portable power. With over a decade of experience writing product reviews, I've tested a lot of laptops, tablets and other gadgets that didn't exactly wow me. Companies love to claim that new technologies such as 5G cellular connections and generative AI will change our lives, but the former feels forgettable and the latter continues to fail to impress. Instead, I've noticed that the most important new products tend to be the little gadgets that make things easier to do, thanks to one little tweak that feels obvious in retrospect. That's what happened with the Anker Nano Power Bank, which I've relied on for over a year and a half. The Anker Nano Power Bank doesn't get my vote just because it's kept me in the green for months and months. It recently thrived in competition as I tested it against 10 other popular power banks while revamping our best portable chargers guide. Not only did I measure charging speeds but it also won points for its ease of use and ports. This is not to say that the Anker Nano Power Bank is a piece of rechargeable perfection, as it didn't win every single category. But no other charger under $50 proved as convenient to use, and it also provided some of the fastest phone charging times in the field. A great design that puts the rest to shame Most portable chargers are essentially the same rectangular power supply we've all kept in a pocket or purse. As much as we're happy for the juice they provide, we're not exactly thrilled to use them, especially when they often require you to pack a charging cable and are useless without one. Not to mention the awkward aesthetic of a cable snaking out of a back pocket and into a phone — 'tourist chic,' as I call it. Then there are the slightly better portable chargers that have one or more cables that snap to the charger's sides. Unfortunately, many of these juice boxes are a bit too bulky and pricey, without offering a substantial difference, and I'd only recommend them to the folks who value the convenience of charging via both Apple's Lightning port and the USB-C port at the same time. (Speaking of Apple's port, if you use an iPhone 14 or earlier, you would need get the compatible Anker Nano Power Bank with a Lightning cable.) The Anker Nano Power Bank gives you everything you need and nothing that you don't, though. That starts with its built-in USB-C charging cable, which helps it refuel everything from most Android phones and modern iPhones to tablets, PS5 controllers, many wireless headphones (including my beloved Sony WH-1000XM6) and more. Oh, and unlike most chargers, the Anker Nano comes in five colors: black, white, purple, blue and green. I've seen both the blue and green models in person and appreciate both their hues, not to mention the option to match your tech to your wardrobe. The Anker Nano Power Bank's cable isn't just built-in either; it's designed so you can charge your phone while you use it on the go. It's all thanks to a convenient little metal bar that makes it so the USB-C cable is always sticking out, like a loop. I simply slide one or more of my fingers into that loop, and the tip of the charging cable extends upward to plug into my phone. And that's how I'm holding my phone while it's charging, so I can make immediate use of this replenishing power by checking emails, sending texts and reading the news. This leaves my other hand free to use an umbrella, drink a beverage or any number of other things. You shouldn't have to expend too much effort when you're charging your phone, and the Anker Nano Power Bank's proven that to me. Long after I found and became fond of the Anker Nano Power Bank, I was given the assignment of revising CNN Underscored's best portable chargers guide. This meant I tested 11 of the most popular and beloved portable chargers on the market, seeing how fast they refuel an iPhone 16 and a Samsung Galaxy S25 Ultra, among other devices. The Anker Nano Power Bank's 30W charging power enabled strong performance when refueling an iPhone 16, adding more than 50% of a charge in 30 minutes (only one percentage point off the high score for this category). For those curious, the Mophie Powerstation Plus 10K won that round, but it costs twice as much. And while the environmentally conscious Nimble Champ also offers high-speed charging, it costs $20 more and has no built-in cables. The Nano also posted a stellar score on the S25 Ultra charging test, with nearly half of its battery refueled in the half hour, beating about half of the chargers in our testing pool. But if charging speed is your number-one concern, you may want the 10,000mAh Iniu portable charger, which also packs a built-in USB-C cable. Its iPhone 16 charging score was fantastic (and it did even better on the S25 Ultra), but its cable isn't as conveniently designed, and it failed to recharge the Samsung Galaxy Tab S10 FE+. Everyone shopping for a portable charger wants two things above all else: ease of use and charging power. Anker's chargers, as a whole, do a great job of balancing both and always offer solid build quality with materials that feel durable and reliable; this isn't unique to just the power bank I'm recommending here. Anker also sells a smaller 22.5W Nano Power Bank that swaps the built-in cable for a foldable USB-C connector that folds in and out of its top. This portable charger is pretty good, but it might not be right for you if you don't like the idea of having a 'taller' phone. Plugging it into the port at the bottom of your phone basically extends your device's height. If you're looking to refuel laptops and tablets, I need to tell you about one of the more exciting products that came from the CES 2025 Anker launch: The new 165W Anker Laptop Power Bank will refuel your tech quickly, and it's got two built-in USB-C cables. One doubles as a wrist strap, and the other is a 2.5-foot retractable cord that hides inside its frame. There's nothing bad about this charger, but its dimensions are a bit too big to easily fit in any pocket or bag on the average night out. That said, if your night out typically involves camping and checking out the stars, consider the mighty Anker Solix C300 DC. In the end, though, I say go for the 30W Anker Nano Power Bank. It's much more portable than the Laptop Power Bank, and it charges faster than its smaller counterpart. Plus, you get a 10,000mAh battery that's twice the capacity of what you get in its baby brother (while still being a TSA-approved power bank). This is probably a great time to tell folks that certain airline power bank rules have changed recently, so you might want to double-check before your next flight. All three of these portable chargers could be your own all-star, but I'm pretty sure the 30W Anker Nano Power Bank I pack is the best for most people. For anyone like me who is constantly on their phone, the Anker Nano Power Bank will be one of those purchases you'll never regret. You'll also probably wonder how you ever lived without it. Not only does it keep my phone from hitting low battery but it's easy to use while I'm tapping out a text or email, scrolling the web or watching yet another video. You'll never have to even think about learning how to ask for a charger in another language on your next vacation, and you'll be able to focus on everything else during your next night out. How fast can the Anker Nano Power Bank charge a device? How fast can the Anker Nano Power Bank charge a device? That depends on your device, but it refueled 56% of an iPhone 16 in 30 minutes and 45% of a Samsung Galaxy S25 Ultra in the same amount of time. Are there any devices the Anker Nano Power Bank isn't compatible with? Are there any devices the Anker Nano Power Bank isn't compatible with? Because the standard Anker Nano Power Bank has its own USB-A and USB-C ports, it can charge nearly all your devices. If your devices use a Lightning port, there is an Anker Nano version for that too. It doesn't deliver enough power to recharge laptops, though, but we don't think most people would expect a pocket-sized portable charger to refuel a MacBook. Can you charge your device with the Anker Nano Power Bank when your device has a case on? Can you charge your device with the Anker Nano Power Bank when your device has a case on? Yes, and I do it all the time when my iPhone 16 Pro Max is in its Nomad Rugged Case. CNN Underscored thoroughly tests the products we review and provides full transparency about our testing methodology. We're made up of skilled writers and editors who have many years of experience testing, researching and recommending products, and they ensure each article is carefully edited and products are properly vetted. This article is the culmination of more than a decade spent trying to find the right portable charger, as our electronics writer Henry T. Casey tried everything from cases with built-in batteries to MagSafe power bricks. When he isn't refueling his devices, he's testing tablets, phones, laptops, headphones and so much more.
The Guardian
10-04-2025
- The Guardian
The best power banks and battery packs for reliable charging on the go, tested
It's disempowering when your smartphone, laptop or other important gadget runs out of battery. With the flash of a graphic or a plaintive bleep, we lose a way to entertain ourselves, get things done, stay in touch or even get home safely. There's a time and a place for a digital detox – but what is the time, and where am I? The Guardian's journalism is independent. We will earn a commission if you buy something through an affiliate link. Learn more. Carrying a power bank is your ticket out of electronic oblivion. These pocket-sized cuboids plug into compatible devices and charge them, often via assorted connections, including USB-C and USB-A. Most power banks are made for charging smartphones and smaller gadgets, such as fitness trackers and earbuds, but some models can also charge power-hungrier laptops and large portable speakers. More capable still (and pocketable only in the realms of fairytale), portable power stations can charge various high-voltage appliances – perfect for camping, garden parties and power cuts. To find you the best power bank for your electrical exigencies, I put 10 top models through their paces, including options from Belkin, Anker, Cuktech, Bluetti, Acer, EcoFlow and Juice. Bear in mind that any particular power bank will only be suitable for charging compatible devices, based on its power output and connectivity. Before you buy one, check the specs against your smartphone or other devices. Best power bank overall: Belkin BoostCharge Pro 3-port 20k£79.99 at Argos Best power bank for portability: Anker Nano£29.99 at Anker Best budget power bank: Belkin BoostCharge 10k with integrated cable£24.99 at Belkin Best power bank for speed and power: Cuktech 15 Ultra£89.99 at Amazon Best high-storage power bank: Anker 165W£89.99 at Anker I've been reviewing tech products since the mid-2010s. When I'm not actually trying out gadgets, I'm often writing about them using my laptop, or discussing them with editors and PR contacts on my smartphone. As a result, I spend a lot of my time using portable, battery-powered electronic devices. You might say I'm just the sort of person who needs a good power bank. I used all of the models featured in this article – even the power hat – while working on the go at libraries, cafes and on public transport. Not once did my laptop or smartphone run out of battery! I tested these power banks by using them to charge various devices with different requirements, including: Honor Magic7 Lite smartphone (battery: 6,600mAh) Honor Magic7 Pro smartphone (battery: 5,270mAh) Acer Aspire Vero 16 laptop (65W three-cell li-ion battery) I timed how long it took for each power bank to charge these devices by 30%. I only charged the laptop with suitably powerful power banks. Thanks to Honor and Acer for loaning us the smartphones and laptop for testing. The huge batteries on these devices meant there was a lot of waiting around between test charges. These days, flagship smartphones have a battery capacity of about 3,000-5,000mAh. If you have an older or less flashy model, you may find its battery has a capacity as low as 2,500mAh. Some of the power banks had additional features, such as digital displays, integrated cables and control buttons. I tested these extras where present and also considered the portability and aesthetics of each model. Some brands didn't want their power banks back after testing. Those models will be donated for fundraising to Cat Action Trust 1977, a small national charity dedicated to the welfare of feral cats. £79.99 at Argos£79.99 at Belkin If you need a highly capable power bank that can recharge your laptop as well as your smartphone, this model would be a fine choice. Across three charging ports (one USB-A and two USB-C), there's a combined power output of up to 65W – more than sufficient to charge two smartphones at once. Why we love itDuring my testing, the BoostCharge Pro topped up an Acer laptop at the sort of speeds I'd normally expect from a mains-powered charger. And it was no slouch when it came to charging smartphones. I was impressed to note that charging didn't slow down much when I plugged in two devices at once. The power bank is a stout, minimalistic device that will make a subtle addition to your tabletop. Considering that it can store up to 20,000mAh of charge, it's impressively lightweight – a suitable choice for a purse or bumbag. The bank's digital display activates at the press of a button to give you a read on its storage level and outputs. The metrics are slightly less detailed than what you'd see with certain competing laptop power banks, but the information is presented clearly and includes a useful timer that indicates how soon the power bank will run out of power. It's a shame that … the on-screen metrics are slightly less detailed than what you'd see with certain competing laptop power banks. However, the information is presented clearly and includes a useful timer that indicates how soon the power bank will run out of power. Weight: 378gConnections: USB-C (x 2); USB-AOutput wattage: up to 65W (total)Capacity: 20,000mAh (5.15 charges of a Samsung Galaxy S25) Time to charge Honor Magic7 Lite smartphone (30%): 45minsTime to charge Honor Magic7 Pro smartphone (30%): 31mins 30secsTime to charge Acer Aspire Vero 16 laptop (30%): 25mins 30secs £29.99 at Anker£29.84 at Amazon Quick, convenient and small enough to carry in a trouser pocket, the Nano is ideal for lightly recharging a smartphone or earbuds. For me, no other power bank strikes the same balance between impressive charging speed and portability. It's the perfect fallback for the person whose phone never quite manages to stay powered through the day. Why we love itThe Nano is minimalistic, but the features it offers are well realised. I'm a big fan of its fold-out USB-C connector, which you can use to plug the power bank directly into your phone. Not only is this a neat charging solution but also it rules out the risk of charging being impaired by a faulty or below-spec cable (each one has a maximum current and voltage). That said, if you're attached (pun intended) to your cable, there's also a regular USB-C port on the side of the power bank. There are a few limitations that come with using a teeny-tiny power bank like the Nano. Its 5,000mAh storage capacity is sufficient for giving most smartphones a good top-up, but it might not be enough to fully charge the device. It's a shame that … you'd need something more powerful to charge your laptop. Weight: 102gConnections: foldable USB-C connector; USB-C portOutput wattage: up to 22.5WCapacity: 5,000mAh (1.29 charges of a Samsung Galaxy S25)Time to charge Honor Magic7 Lite smartphone (30%): 24minsTime to charge Honor Magic7 Pro smartphone (30%): 23mins 15secs £24.99 at Belkin£24.99 at Amazon It's hard to believe this is a cheap option. The BoostCharge Power Bank 10k has a premium-feel soft finish and speedily charges smartphones, earbuds and other lower-powered devices via its USB-C outlets. Why we love itNeatly proportioned and impressively light by comparison with some of its rivals, this is one of those rare power banks that you could blithely carry in a jacket pocket, without much fear of stretching the material. Thanks to the integrated USB-C connector, you don't even need to remember a cable. It's a shame that … charging two devices at once reduces the maximum total output from 20W to 15W, so single-device charging is considerably quicker. Weight: 218gConnections: integrated USB-C cable; USB-C portOutput wattage: up to 20WCapacity: 10,000mAh (2.57 charges of a Samsung Galaxy S25)Time to charge Honor Magic7 Lite smartphone (30%): 42mins 45secsTime to charge Honor Magic7 Pro smartphone (30%): 36mins 45secs £89.99 Amazon This power bank was difficult to test – it charged devices so exceptionally quickly that I struggled to get to my stopwatch in time. Why we love it The Cuketch 15 Ultra is light years ahead of the competition in terms of charging speeds, and with three ports (two USB-C, one USB-A) delivering up to 210W, there's incredible potential to charge multiple high-energy devices. Its 20,000mAh capacity is enough to charge the average smartphone at least thrice – or give your laptop battery a significant top-up. With great power comes somewhat lower portability. This is undeniably a weighty power bank – the heaviest of its calibre that I tested. For users who prefer to pack light, that may be a deal-breaker. Still, the 15 Ultra is a well-made, smart-looking device. The TFT display gives you lots of detail on the power bank's battery level and charging status, and you can use it with the control button to configure each port to act as a power input, output or both. You get nice accessories, too: a 3.2ft charging cable, plus a soft carry case to keep the power bank safe. It's a shame that … the characters on the TFT display are small, which won't be ideal for users with impaired vision. Weight: 595gConnections: USB-C (x 2); USB-AOutput wattage: up to 210WCapacity: 20,000mAh (5.15 charges of a Samsung Galaxy S25)Time to charge Honor Magic7 Pro smartphone (30%): 10mins 30secsTime to charge Honor Magic7 Lite smartphone (30%): 15minsTime to charge Acer Aspire Vero 16 laptop (30%): 26mins 15secs £89.99 at Anker£89.99 at Amazon A power bank for true tech lovers, the Anker 165W is capable of keeping your smartphone, laptop and other gadgets going through the day, thanks in no small part to its incredible 25,000mAh storage capacity. It's a pleasing piece of tech in itself, with a nicely styled integrated display that tells you how much power is being drawn from each of its ports, and how much charge is still in the bank. Why we love itThis model has superb connectivity, with three USB-C inputs/outputs (two of them are connectors, one is a port) and another outlet for USB-A charging. With a 165W total output to play with, you can charge several devices rapidly at the same time. In terms of features, it goes above and beyond. Pressing the power button twice initiates trickle charging, which keeps a charged device at a stable battery level. The digital display indicates the power bank's temperature and condition, as well as its charge level. It's a shame that … this bulky model may be too cumbersome for some. However, a bit of heft is to be expected in a 25,000mAh power bank. A premium-looking, soft-edged enclosure and cleverly integrated loop handle make the device feel less imposing than it might. Weight: 593gConnections: USB-C connector (x 2); USB-C port; USB-AOutput wattage: up to 165WCapacity: 25,000mAh (6.44 charges of a Samsung Galaxy S25)Time to charge Honor Magic7 Lite smartphone (30%): 31mins 30secsTime to charge Honor Magic7 Pro smartphone (30%): 24minsTime to charge Acer Aspire Vero 16 laptop (30%): 45mins 45secs Sign up to The Filter Get the best shopping advice from the Filter team straight to your inbox. The Guardian's journalism is independent. We will earn a commission if you buy something through an affiliate link. after newsletter promotion £319 at B&Q£319 at Decathlon Best for: high-power portable charging This portable power station has more ports than you can shake a USB stick at. Two USB-C outputs and a USB-A output cater for your lower-powered devices, and there are DC and AC power outlets, too; the latter accepting a regular three-pronged UK power plug. With a total maximum power output of 700W (rising to 1,000W when using the AC50B's power lifting mode, which is useful, briefly, for power-intensive applications, such as boiling a kettle) and a 448Wh storage capacity, there's plenty of provision to power garden parties, camping trips or even renovation work in an off-grid home. I was thoroughly impressed with the AC50B during testing. It charges devices rapidly; the interface is simple with just three buttons to master; and the 'cut-out' moulded handle makes it easy to carry the 6.7kg power station to its destination. It didn't make the final cut because … most buyers won't need something so powerful or feature-rich. Weight: 6.7kg; connections: 700W AC outlet, USB-C port (x 2), USB-A port, 120W 'cigarette lighter' port; output wattage: up to 1,000W (lifting) or 700W (continuous); capacity: 448Wh (equivalent to 89,600mAh when charging one device at 5V; 23.07 charges of a Samsung Galaxy S25; time to charge Honor Magic7 Lite smartphone (30%): 24mins 45secs; time to charge Honor Magic7 Pro smartphone (30%): 24mins; time to charge Acer Aspire Vero 16 laptop (30%): 30mins £499.99 at B&Q£499.99 at Mountain Warehouse Best for: powering devices in the garden Simple, user-friendly and equipped with enough storage and connectivity to run or recharge numerous energy-intensive devices, the Acer 600W is a great pick to power your picnics and camping trips. Relative to other products of its type, this model is reasonably light, and the fold-down carry handle distributes its weight nicely. The integrated strip LED at the top of the front panel is a nice touch – perfect for outdoor entertaining after dark, or for visibility during a power cut (the sort of moment where you'll appreciate having a power station charged up). Two DC5521 sockets are provided so you can charge the power station via solar panel. It didn't make the final cut because … its price is too high for a lot of users. Weight: 7.35kg; connections: AC outlet (x2); USB-A (x 2); USB-C (x 2); 'cigarette lighter' port; DC5521 DC socket (x 2); output wattage: up to 600WCapacity: 512Wh (equivalent to 102,400 mAh when charging one device at 5V; 26.36 charges of a Samsung Galaxy S25); time to charge Honor Magic7 Lite smartphone (30%): 45mins 45secs; time to charge Honor Magic7 Pro smartphone (30%): 47mins 15secs; time to charge Acer Aspire Vero 16 laptop (30%): 30mins £99 at EcoFlow£99 at Amazon Best for: charging devices at a festival Stop charging your smartphone with mains electricity, and start topping it up with your headwear instead. The delightfully eccentric Power Hat from EcoFlow conceals an array of solar panels within its brim, and these power a USB-C and USB-A charger underneath. When the sun is shining, you can plug in your smartphone and give it a top-up. I waited for a mild spring day to test the hat's charging capabilities. Compared with a conventional power bank, charging was slow – but when you're relaxing outdoors, that may not matter much. Using solar means you'll save money on electricity, and the hat's UPF 50+ sun and UV protective material will help keep you safe while you're at it. It didn't make the final cut because … its charging performance is highly weather-dependent – and this is a UK publication. Weight: 370g; connections: USB-C; USB-A; output wattage: STC12W (+/-1W); capacity: no storage; time to charge Honor Magic7 Lite smartphone (30%): 2hrs 51mins; time to charge Honor Magic7 Pro smartphone (30%): 1hr 47mins 45secs £14.99 at Argos£19.99 at Amazon Best for: simple, low-cost charging capability This is a simple, reliable and inexpensive power bank that you can sling into your bag and forget about until you need to charge your phone or headphones. There are no bells and whistles here, but the Juice 3 does everything that counts. It can charge up to three devices at once using its single USB-C and two USB-A ports, and a tiny USB-A to USB-C cable is included to help you out in a pinch. This power bank's 10,000mAh storage is great for the price you pay. It didn't make the final cut because … though affordable it's understandably not the quickest at charging devices – especially not when you're using the USB-A ports. Weight: 193g; connections: USB-A (x2); USB-C; output wattage: up to 15W; capacity: 10,000mAh (2.57 charges of a Samsung Galaxy S25); time to charge Honor Magic7 Lite smartphone: (30%): 25mins 30secs; time to charge Honor Magic7 Pro smartphone: (30%): 21mins £89.99 at EcoFlow£89.99 at Currys Best for: eye-catching design This chic new power bank from EcoFlow is the perfect partner for a much-loved phone, with a USB-C output and magnetic charging via the speedy Qi2 protocol. It charged smartphones quickly during my testing, and it also proved capable of giving a laptop an emergency top-up (which soon drained its battery). Power banks are generally practical items rather than pleasing objects – but the Rapid is both. I enjoyed its mirror-finish display, which pairs in retro-futuristic fashion with pixellated read-outs on the power bank's charge status, input and output. There's also a fold-out 'kickstand' that keeps your phone upright during charging, which could come in handy for watching films on the train. It didn't make the final cut because … it's not as versatile as some similar-spec models. Weight: 258g; connections: Qi2 magnetic; USB-C connector; output wattage: up to 30W; capacity: 10,000mAh (2.57 charges of a Samsung Galaxy S25); time to charge Honor Magic7 Lite smartphone (30%): 25mins 30secs; time to charge Honor Magic7 Pro smartphone (30%): 21mins There are a few crucial specs to look into when you're choosing a power bank. The wattage tells you the power bank's power output. Laptops, smartphones and other gadgets all require a certain wattage, so you need to get a power bank with a port that's powerful enough to charge the device. The same goes for voltage. If a power bank has multiple ports for charging devices simultaneously, then maximum power outputs will be given for the ports, individually and in total. High-wattage power banks are usually heavier, bulkier and more expensive than lower-powered models, as they require more storage and cooling capability. A power bank's inputs and outputs are also crucial. Most power banks feature ports that connect to devices (or to a mains outlet to receive charge) via USB-C or USB-A. Some models can also charge compatible devices – especially smartphones – wirelessly. And for Apple device users, certain power banks feature a Lightning cable and port. Capacity (mAh) tells you how much electrical charge the power bank can hold in its onboard lithium-ion battery. If a smartphone has a 6,000mAh battery and your power bank holds 20,000mAh, then you should be able to charge the phone fully at least three times without running out of power. As with all devices that rely on a lithium-ion battery, power banks gradually become less effective until they can no longer be used. When a battery is fully charged and then fully discharged, this is called a cycle. The number of charging cycles a power bank can supply varies greatly between models, but you'll get somewhere in the range of 300 to 1,000 in most cases. Depending on how much you use your power bank, that could keep you charged up for a year, or perhaps several years. It's instructive that power bank warranties typically top out at about two years. Good usage habits can preserve the condition of your power bank's lithium-ion battery, therefore extending the lifespan of the power bank itself. Very-low or very-high charge levels put the most stress on these batteries, so try to keep your power bank moderately charged most of the time. It's also best to avoid storing your power bank in very hot, cold or humid places. Pete Wise is a freelance journalist with more than a decade's experience covering everything from global development and social causes to technology and music. He has written extensively on portable tech, including laptops, smart speakers and drones – one of which he misplaced in the skies over a West Yorkshire village. Reviewing power banks was a natural fit for Pete's days out of the house as a remote worker, as he charged from bus to train, to library, to coffee shop
