Portable Power Bank 518w

4 FAQs about Portable Power Bank 518w

Which power bank should I buy?

The Nimble Champ is our top recommendation for most folks, but we have all sorts of alternatives here. Read our Best MagSafe Power Banks guide for magnetic wireless chargers, and our Best Portable Power Stations guide for more power. Updated November 2025: We've added a power bank from EcoFlow, and an honorable mention for a new Anker power bank.

Should you buy a power bank or a portable charger?

The best power banks are always handy. Our gadgets have a Murphy's law–like ability to run out of power at the least convenient moment: as you step on the bus, right in the middle of an important meeting, or just as you get comfortable on the couch and press Play. But with a portable charger, you can keep using your devices.

Can you use a power bank to recharge a phone?

Many smartphones, including Apple's iPhones, support the power delivery standard, meaning you can use higher-power power banks to recharge the device with no issues. A few phones, such as Samsung's Galaxy S range, support a supplementary PD protocol called PPS (Programmable Power Supply) that goes up to 45 watts.

How long does it take to recharge a power bank?

Plug in both USB-C ports and you can recharge at 250 watts to 80 percent from zero in 20 minutes. BioLite Charge 100 Max for $180: This durable power bank is versatile, a good size to slip into a bag, and has a nice, grippy textured finish.

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