Black Diamond Ember Power Light

We used this new take on the old school light as a backup for headlamps and also to revive dead smartphones on multiday trips.

Brand: Black Diamond Gear Reviews

Model: Ember

Reconsider the lowly flashlight: We used this new take on the old school light as a backup for headlamps and also to revive dead smartphones on multiday trips. The Ember has a bright LED beam (150 lumens) and a rechargeable battery (2,600mAh) that provides enough juice to bring an iPhone 6 from a 15 percent charge to 100 percent, according to our tests. Just twist the handle to expose the USB port. An oval touchpad allows you to swipe the light on or off—as well as adjust brightness levels—and a green light turns red when the power level dips below 20 percent. $50; 3.4 oz.;

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