Off-Grid | Power Hub Dry Bag
Adventurer with the HydraPower Outfitters dry bag in a rugged outdoor setting

Power Your Adventure with Sun or Water.

Introducing the Power Hub Dry Bag that harnesses electricity on the go. Summer Edition, 100 units while stocks last.

Pre-Order Now

The Ultimate Adventure Companion

Packed with features designed for the modern explorer.

Water Activated Energy
Generate power by adding water and salt. Charge a mobile phone up to 4 - 5 times with one magnesium alloy plate.
Solar Power Ready
Harness the sun with the included HydraMetal Soft Solar Panel Set for continuous, renewable energy.
Wet Area Device Usage
The transparent window lets you tap or view your mobile phone or tablet, even in wet conditions.
Modular Design
Quickly and easily replace metal and air electrodes to keep the power flowing on long trips.
Quality Assured
Each unit is meticulously hand-assembled and must pass a rigorous QA checklist before being shipped.

Instant Power, Anywhere.

The revolutionary metal-air battery technology turns simple saltwater into usable electricity. See how easy it is to power your devices, completely off-the-grid.

Add Water & Salt

Generate Power

Test Your Own Metal Air Fuel Cell Recipe

Experiment with different components to see how they affect power output. The possibilities are endless!

Metal Electrode

Choose the metal plate that will react with the electrolyte.

Air Cathode

The air-breathing cathode determines oxygen flow.

Electrolyte Type

The solution that enables ion flow. Affects conductivity.

Salinity (g/L)

35 g/L (3.5 wt%) is recommended for optimal performance.

35 g/L
Air Temperature

Adjust the simulated ambient air temperature.

25°C
Electrolyte Temp

Adjust the simulated starting temperature of the electrolyte.

20°C
Electrolyte Volume (mL)

The amount of electrolyte used.

500 mL
Anode Weight (g)

Heavier anodes provide longer-lasting power.

100 g
Electrode Gap (mm)

The distance between the anode and cathode.

5 mm
Estimated Output

27.8

Wh

This is a simplified estimate for demonstration purposes. Real-world results will vary based on many factors.

Pre-Order Your Kit

Join the wave of adventurers to experience the "Off-Grid | Power Hub Dry Bag". This is a limited edition pre-order of only 100 units. Secure yours today.

What's Included:

  • 1x Off Grid | Power Hub Dry Bag
  • 1x HydraMetal Air Cathode (can be used with ~5 - 20 metal anode depending on proper cleaning and dry after usage)
  • 1 x HydraMetal Mg Plate Anode
  • 2x USB-A and 1 USB Type C Power Port
  • 1 Solar power harnessing set (0.3-0.9 Watt , 2 - 6 V)
  • 1x Manual Instruction booklet
  • 1-Year Standard Warranty covers Repair or part(s) replacement (not including the activated consumable parts (activated cathode and metal plate).

Color Variations:

Blue

Blue

Yellow

Yellow

Orange

Orange

Silver

Silver

Final Product Design:

Front View

Front View

Back View

Back View

Trusted by Adventurers

Real stories from our community of explorers and outdoor enthusiasts.

"This bag is a game-changer. On a 5-day trek, I kept my drone, camera, and phone charged the entire time. The peace of mind is priceless. Plus, it's seriously waterproof."

AH

Alex H.

Hiker & Photographer

"I was skeptical about the 'just add water' power, but it works flawlessly. It saved me during a sudden downpour when all my other power banks were dead. Highly recommend!"

SK

Samantha K.

Kayaker & Vlogger

"A must-have for any emergency kit. Reliable, no need to pre-charge, and stores indefinitely."

MT

Mike T.

Emergency Prepper

Frequently Asked Questions

Have questions? We've got answers.