Assembly Animations

Powerhouse Setup

Powercell Setup (Coming Soon)

The all-new Powercell, an ultralight carbon fiber axial flux hand crank generator.

Tips for Peak Performance

The Zeus Dynamo Powerhouse hand crank generator mounted vertically to an indoor door, demonstrating how to fast charge a smartphone.

For Phones & Small Devices

To charge a smartphone, GPS, or headlamp, crank at a steady pace of about 1 revolution per second. This is the most efficient speed for fast-charging most small electronics.

For Tablets & Large Devices

To charge larger devices like tablets, begin by cranking quickly (2+ revolutions per second). You will feel the resistance suddenly increase—this is a good sign that fast-charging has begun. Find a comfortable, steady pace to maintain the charge.

The Zeus Dynamo Powerhouse hand crank generator being used to fast-charge an Apple iPad in a rugged outdoor setting.

A User's Guide to Maximizing Power

An icon illustrating a smartphone's built-in safety settings that limit its maximum charging speed.

1. Your Device’s Built-in Limits

Your device has built-in safety settings that limit its charging speed. Generally, devices with larger batteries can accept a faster charge.

An icon representing a high-quality USB-C Power Delivery (PD) cable, which is necessary for achieving the fastest charging speeds.

2. The Right Connection

For the fastest charge, always use a high-quality, PD-compliant USB-C cable. The direct USB-C connection is the most powerful and efficient path.

An icon illustrating that battery charging speed is fastest when the device's state of charge is low.

3. State of Charge

Charging is fastest when a battery is below 50%. Your device’s software intentionally slows the charge speed as it fills, especially above 80%.

An icon illustrating that the electrical output of the generator is directly determined by the user's own physical cranking effort.

4. Your Own Cranking Power

Our generators efficiently convert your muscle power into electricity, but the output is determined by your input. Larger devices will require more effort.

Frequently Asked Questions

The Powerhouse is our original all-metal generator, built for maximum durability and brute-force power. The all-new Powercell is our ultralight, technologically advanced model, engineered with carbon fiber composites for ultimate portability and efficiency.

While results vary by device, you will generally see 1-2% increase in charge per minute of cranking. About 3 minutes of steady cranking is usually enough for a 5-minute call or a significant battery boost. 

The generator is designed to be highly water-resistant and is protected by a weatherproof kit bag. While it can handle rain and splashes with no issue, it should not be fully submerged.

We stand by our craftsmanship. If you experience any part failures or need replacements, reach out to us at greg@zeusdynamo.com and we can usually send you replacement parts free of charge. 

Need More help?

If your question wasn’t answered here, please don’t hesitate to reach out. Our founder personally reviews and responds to customer inquiries.

Contact us at: greg@zeusdynamo.com

A cozy cabin in the snowy mountains, representing the security and support offered by Zeus Dynamo.