The Solix F3000 can be scaled for a van, work site, or whole home backup.

Anker's latest sale on Amazon includes a bunch of solid power banks and charging accessories. Key among them is the Anker 737 portable laptop charger, which is 41 percent off and down to $88. That's the best price we've seen all year so far,

One thing you should always have in your bag, backpack, or pocket—especially with summer coming up—is a portable power bank. You never know when your battery is going to fail, like when you’re stuck in the city and still haven’t Ubered home.