Skip to main content
  1. Home
  2. Outdoors
  3. News

The Hydralight is the world’s first water-activated flashlight

Add as a preferred source on Google

Say goodbye to batteries — the Hydralight uses salt water to power its energy cells. This unique, patent pending technology aims to reduce battery waste and provide for an environmentally friendly power source that is both effective and reliable.

This new line of Hydralight products is powered by water-activated hydracell energy cells. The Hydralight incorporates a commonplace alloy and other eco-friendly elements that when hydrated instantly produce a steady flow of electric current. The current is maintained at the same level throughout the lifetime of the cell. No more fading headlamps and dimming flashlights — the Hydralight makes battery-powered woes obsolete. 

Recommended Videos

The technology involves a simple ion exchange that is activated by ordinary salt water. To switch it on, simply remove the Hydralight cell from the lantern, dip it in salt water for 10-15 seconds, and replace it back into the hydracell for hours of instantaneous light and power. Just a few dips in water can charge the cell for days, providing over 250 hours of power.

The Hydralight is ideal for car camping trips, off-the-grid adventures, boating, and especially activities by the sea, as the ocean provides for an endless supply of power. And when you’re not near the sea, all you need to do is combine a cup of water with a few tablespoons of salt and dip in the hydracell for an equivalent source of power.

This eco-friendly, energy-efficient technology is delivered in a rugged, portable, and adaptable form. The products are designed to be used in any temperature or weather condition, rain or shine. Gone are the dark days when you realize you’ve forgotten your extra batteries for a camping trip — now you just add water.

These durable cells can be stored when dry prior to initial use for more than 25 years. Once activated, the cells can be dipped repeatedly, and are easily refurbished as well. Not only does the Hydralight provide for hours of light, but the product is integrated with USB ports for charging cell phones and other compatible devices.  

The product line includes a supercell combination lantern/charger, personal lantern, utility lantern, utility downlight, and an accessory light. The company also offers two styles of flashlights as well as a utility powerpack. Everything is listed on the Hydralight website.

Amanda Ellis
Amanda is an outdoor junkie and digital nomad with an insatiable hunger for gear. Based out of Raleigh, NC she travels to…
New York’s food carts are going electric in clean air trial
Street food is getting an upgrade, and your ears will thank you.
Burger, Food, Kiosk

For decades, the soundtrack of New York City's streets has included the constant hum of gasoline generators powering thousands of food carts. The noise has become so familiar that most people barely notice it. Now, the city wants to find out whether rechargeable batteries can do the same job without the pollution, noise and fuel costs.

According to Techxplore, New York has launched a six-month pilot that equips 10 licensed street food vendors with battery-powered energy systems, replacing the gasoline generators that typically run cooking equipment, refrigerators and ventilation systems. The trial is designed to reduce air pollution, cut noise levels and improve working conditions for vendors who spend long hours beside the generators.

Read more
Gotrax Mustang electric bike review: Stylish, comfortable, and shockingly practical
The Mustang is a fantastic, throttle-happy e-bike that blends practical commuting speed with an impressive range.
Gotrax Mustang electric bike.

View at Gotrax

Quick Take

Read more
Airbnb will now let you order groceries in advance and stay in hotels, too
Airbnb wants a piece of every dollar you spend on a trip, not just the one you spend on accommodation.
Electronics, Phone, Mobile Phone

Airbnb started as a place to find someone’s spare bedroom, but twelve years later, it's trying to be the only travel app you need. 

With the 2026 Summer Release update announced today, you can not just book a bedroom or a house, but also order groceries, schedule airport pickups, car rentals, boutique hotels, access the AI planning tools, and access the FIFA World Cup experiences, all within the Airbnb app. 

Read more