We tested 13 power banks to help you choose the best one – from 10-25K mAh and 20-220W, see how each behaves when…

However, recent testing of more than a dozen portable chargers reveals that a few small, easily overlooked factors can make a massive difference in day-to-day usability. While checking off ports and capacity is a solid starting point, deeper examination shows that performance nuances separate a mediocre travel companion from an essential piece of mobile gear. One of the most critical differentiators uncovered during testing is the sheer amount of time it takes to replenish the power bank itself once its internal batteries have been entirely depleted.

According to recent evaluations conducted by Tom’s Hardware staff writer Joe Shields, who regularly reviews hardware and PC components, a couple of the power banks currently being tested take an agonizing four to six hours to fully charge. While that leisurely replenishment pace might be completely fine for users who leave their chargers plugged in overnight without a second thought, it can easily turn into a dealbreaker for professionals, travelers, or digital nomads who demand a much quicker turnaround time on a fully charged portable battery bank before heading back out into the field.

To better understand the wide spectrum of options currently populating the market, testing efforts have encompassed a diverse lineup of 13 different power banks. These units vary dramatically in physical form factor, power delivery capabilities, and intended use cases. At the lighter, more portable end of the scale sit slim, single-port 5,000 mAh units designed to slip effortlessly into a pocket while outputting around 22W of power. At the opposite end of the spectrum are massive, multi-port 25,000 mAh bricks capable of delivering a staggering 220W of combined output across multiple ports, making them robust enough to handle power-hungry laptops and accessories simultaneously.

Pricing across this tested cohort reflects the wide array of capabilities and capacities on offer. The financial investment required ranges from around $24.99 for entry-level models like the Cuktech CP12, which packs a 10K capacity and 20W output, all the way up to $129.99 for the most powerful unit currently undergoing testing, the high-end Anker Prime A110B 20K/220W. This substantial price gap highlights the premium consumers must pay for rapid charging speeds, higher wattages, multiple high-output ports, and advanced power management technologies.

Beyond raw power output, capacity, and pricing, manufacturers also take divergent paths regarding what accessories and physical connections are included inside the retail packaging. Some power bank models come equipped with integrated USB-C cables, allowing users to plug in directly without worrying about packing an extra cord. Other manufacturers opt for a more modular approach, including a removable USB-C cable in the box, which gives users the flexibility to replace a frayed wire or use a cable of a different length. Meanwhile, a notable portion of the market includes nothing else in the box besides the bare power bank unit itself, requiring consumers to supply their own charging bricks and cables to get up and running.

As mobile devices continue to demand higher power draws and users rely increasingly on portable ecosystems to maintain productivity away from traditional workspaces, the humble power bank has evolved from a simple brick of lithium-ion cells into a sophisticated piece of electronic hardware. The ongoing testing at Tom’s Hardware underscores that while basic specifications remain a reliable baseline for consumers, paying attention to recharge times and included accessories can ultimately determine whether a portable charger becomes an indispensable daily tool or an exercise in frustration.