Skip to main content
  1. Home
  2. Mobile
  3. Android
  4. Computing
  5. Health & Fitness
  6. Wearables
  7. Legacy Archives

This portable device battery is waterproof and as tough as military equipment

Add as a preferred source on Google

Waterproof smartphones are cool and all, but every gadget meets its match when the battery is dead and you’re miles away from the nearest outlet. If you’re out in the rough or near water, then carrying a fragile external battery is risky. Poseidon is a new rugged external battery designed to survive those tough environments.

Poseidon is, as far as we know, the first IP68, MIL-spec external battery out there. What this means is that the external battery is designed to be just as rugged as a Panasonic Toughbook, and waterproof. The unit can survive up to four minutes of submersion, as well as any drops or tumbles that any other external battery would likely shatter into pieces. In fact, the Poseidon even survived being blasted by a shotgun 35 feet away.

Recommended Videos

Dark Energy, the team that designed Poseidon, advertises it as a great choice for GoPro users, as it can go pretty much anywhere you’d take your GoPro. The Poseidon’s metal casing is designed to maximize your grip on it, but also makes us wonder what would happen if the Poseidon’s battery overheated – which usually causes devices like smartphones to explode.

If you’re interested, you can check out the Poseidon portable external battery on Kickstarter. At $89, it’s about four time what you’d pay for a waterproof external battery, but would probably last a lot longer (as long as the battery doesn’t fail). The folks behind it hope to deliver the product this summer in time for your beach and fishing trips.

Joshua Sherman
Joshua Sherman is a contributor for Digital Trends who writes about all things mobile from Apple to Zynga. Josh pulls his…
The best Kindle in 2026: Here are the top Kindles for reading
From a pocket-friendly e-reader to a premium color notebook, Amazon has a Kindle for almost every kind of reader.
kindle colorsoft back converted

There's nothing quite like curling up with a good book on a cold evening. As much as I love the feel of a physical book, books take up a lot of space, and carrying more than one on a trip quickly becomes a chore. That's where e-readers come in, and the Amazon Kindle remains one of the best options.

Amazon just refreshed its Kindle lineup with thinner, lighter designs, a new flush-front display, and colors that wrap from front to back. Add the Kindle Scribe and the Kindle Scribe Colorsoft to the mix, and you have more choices than ever before.

Read more
The best Android apps in 2026: I spent months testing dozens that truly earn their keep
From smarter task management to custom home screens, these 20 apps give you good reasons to install something new on your Android phone
Electronics, Phone, Mobile Phone

A good Android app should earn its place on your phone. It might make an everyday task easier, handle something the built-in software can't, or let you change an experience that never quite worked for you.

These 20 apps cover everything from quick notes and password management to automation and local file sharing. Some are free, others charge for advanced features, and a few take some effort to figure out. The point isn't to install them all. It's to find the ones that make your phone work better for you.

Read more
Every iPhone release in chronological order: 2007-2026
From the very first iPhone right up to the cutting-edge iPhone Duo, Apple's handsets have come a long way!
The iPhone 5 and iPhone 15 Pro Max screens.

Since the first iteration of the iPhone, Apple’s smartphone has revolutionized the technology industry and has, in turn, made the Cupertino firm one of the most valuable companies in the world.

This is clearly evidenced by the sheer volume of iPhone sales since its initial launch in 2007; in 2024 alone, nearly a quarter of a billion units were sold, with lifetime sales reaching 3 billion.

Read more