Can you really tell the difference between cheap and expensive portable batteries?

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Portable batteries are essential devices for traveling (or when you need to charge your phone during a power outage), but budget-conscious shoppers may wonder if it’s worth spending a lot of money on them. Can you even tell the difference between cheap and expensive portable batteries? In many cases, it’s certainly possible, and the reasons why aren’t limited to the numbers you see on the product packaging.

Power banks vary widely in terms of battery capacity, but their prices are not tied to this variable alone. Capacity, measured in milliamp-hours (mAh), indicates how much charge a battery can store, while wattage defines how much power a charger can provide. While it’s helpful to know your battery capacity to determine what you can fully charge (and how many times), power banks with higher mAh values ​​don’t automatically charge things faster. Charging speed depends on the charging protocols supported by both your device and the portable battery you purchased.

Consider two power banks of 10,000 mAh and 45 W for comparison. Iniu’s Ultra-Mini P50-E1 Portable Charger sells for around $30 on Amazon, while the Anker Nano Power Bank sells for $59.99 on the platform. They share mAh and power values, but they don’t share price. Indeed, unlike the Iniu model, the Anker charger has additional features. Additionally, Anker has the advantage of being a reputable and well-known brand. When comparing traditional power banks with solar options, the right choice largely depends on your charging speed needs, as solar chargers tend to be slow.

Beyond its 10,000 mAh capacity and 45W max power, Anker’s $60 Nano Power Bank includes a built-in retractable USB-C cable, has a digital display, and accepts up to 30W input for fast charging on many devices. Its reinforced cable also makes it more resistant to wear and tear, and Anker says its exclusive Active Shield battery protection system helps prevent overheating with active temperature monitoring.

These aren’t necessarily features one needs in a charger, but they may matter if you use a power bank every day to quickly charge devices — or if you just prefer bells and whistles like digital displays for charging monitoring. Build quality and safety are also worth considering, especially since some low-end power banks can pose fire risks, which is one of the few downsides of using a power bank. So while improved portable battery technology and safety features are contributing to the rising prices of portable batteries, they are also helping to improve safety and longevity. For $79.99, Kuxiu’s MagSafe S2 Qi2 5000mAh Power Bank uses semi-solid-state battery technology for improved safety and longevity. It is designed to withstand up to 1,000 charge cycles before being able to retain only 80% of its original capacity. This is about double the typical 300 to 500 cycles that conventional lithium-ion batteries can offer.

Spending more on a power bank can make sense when you’ve prioritized reliability, longevity, or overall user experience. However, as with most products, the most expensive option is not necessarily the best. Instead, the best portable battery choice is one whose feature set matches your specific needs, which may just be simple on-the-go charging.

Fortunately, when it comes to portable batteries, a lower price doesn’t automatically translate into lower quality. Buying a cheaper power bank makes sense if you only need a backup charger for your phone rather than a high-end model with extra features or a high-powered hub to power multiple devices.

For example, for around $25, the Iniu P41-E2 Fast Charging Portable Charger features 10,000mAh capacity, 45W max power, two USB-C ports and one USB-A port, all weighing 182 grams. It also supports Programmable Power Delivery (PPS), a PD 3.0 charging protocol that can adjust power delivery for compatible devices. However, its power probably wouldn’t be enough to keep a post-2021 14-inch MacBook Pro’s battery charged during heavy use, for example.

If you only want to charge your phone while traveling or keep a power source on hand as an emergency backup battery, a limited charging speed may not matter much. On top of that, if you don’t like convenience features, a cheaper power bank will probably suit your needs just fine.