At a glance

Expert's Rating

Pros

• Battery capacity winner





• Safety and durability

Cons

• 7.5W rather than 15W wireless charging

Our Verdict

The Statik State 5K Power Bank may not be the smallest power bank we’ve tested, but it’s pretty tiny all the same, and it is the overall winner in our 5K power bank recharging tests. Add in the safety, durability and longer lifespan, and if you don’t mind the longer charging time you’ll be making a fine choice.

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$59.99

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Portable power banks have been getting smaller, but most are still built using conventional lithium-ion batteries. Newer more durable semi-solid-state batteries—using a partially solid rather than liquid electrolyte—can provide higher energy density and improved safety by reducing the risk of overheating, as well as being charged faster. They should also lose a lot less of their energy the more charge cycles they are put through, making them last longer than standard power banks.

This type of battery is often used in devices such as drones and electric vehicles, and they are now appearing in portable power banks—and in particular magnetic power banks that can clamp to the back of an iPhone and immediately start charging. Being less flammable than the liquid electrolytes there may be a day when airlines insist any power bank taken onboard needs to be semi or solid state.

Another plus in their favor: semi-solid state versions are less affected by cold temperatures compared to traditional batteries. And nail tests show that they should also be better at withstanding penetration, without catching fire or exploding. Note: we didn’t try this ourselves!

Solid design

Semi-solid-state power banks can be smaller than conventional battery packs as they can pack higher capacity into a smaller, lighter body. The Statik State Power Bank, however, isn’t the smallest 5000mAh (5K) power bank we’ve tested.

It measures inches 4.1 x 2.8 x 0.45 inches (10.4 x 7 x 1.15cm) and weighs 5oz (141g). That’s about average for a 5000mAh power bank—a little slimmer than most but not as thin as the Anker Nano 5K MagGo Slim (0.34 inches, 0.86cm).

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Simon Jary

Performance

It did, however, outperform all the other same-sized 5K power banks in our iPhone battery recharge tests.

We allow our iPhone 16 Pro to run to zero and then we attach the magnetic wireless power bank to do its best at recharging the faded phone.

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Simon Jary

On first try, the Statik State scored 84% in this test and all the way to 88% in the second test—meaning it ran out of juice as the iPhone reached that percentage of battery life. Our previous champion 5K power bank was the Kuxiu S2, the first semi-solid state battery pack we tested. It scored 79%.

For non-solid-state power banks, hats off to the conventional battery Belkin BoostCharge Pro Magnetic Qi2 Power Bank that matched this 79%, which is also available in a range of natty colors to add to its charms. Both the ESR Qi2 MagSlim and Anker Nano MagGo Slim scored a very respectable 77%, but most 5K power banks averaged around 70%.

For even more battery power you’ll need to up your budget and the size of your pocket to a 10K power bank, which score between 145% and 190%.

There’s also a spare USB-C port on the Statik State that can be used to charge at 20W. That might be useful as the Statik State is merely MagSafe Compatible and so wirelessly charges at a humdrum 7.5W compared to MagSafe/Qi2 power banks that wirelessly output 15W or 25W with the very latest battery packs. If you’re in a particular hurry, look to those power banks—particularly the two Qi2