What’s more annoying than watching your smartphone or laptop slowly but steadily run out of power as you travel? Thankfully, you don’t have to endure this. That’s because external battery packs let you plug virtually any tablet, smartphone or laptop computer into them. The battery packs power your dying devices. But which external battery pack to pick? The Lifehacker Web site asked its readers to rank their favorite battery packs. Here’s what the readers had to say.

 

Anker Astro

Lifehacker readers chose the Anker Astro as their favorite line of external battery packs. Anker manufactures three packs, the 3E, Pro and E4 versions. Each of these devices receive praise for the powerful charging ability they have. The devices also score points for their portability and reasonable prices.

 

New Trent

New Trent is well known, deservedly so, for its iCarrier and iGeek external battery packs. These packs, will also provide powerful charges to devices. They have indicators lights that quickly tell users just how much power their external battery packs still hold. This way, you’ll never be unpleasantly surprised by a dead charger.

 

Energizer XP

Energizer is famous for its line of batteries. The company also receives praise for its line of external battery packs, too, Lifehacker readers say. One of the selling points: The flexibility of these units. The Energizer XP line includes a range of tips and cables which fit just about every portable device, even smartphones that are no longer made.