Turbocharge Your Water Adventures: An In-Depth Review of the ASIWO U1 Sea Scooter

Asiwo .| 20 maggio 2025
A swimmer partially submerged underwater holding the Asiwo U1 sea scooter with both hands, showcasing its compact and powerful design.

Underwater sea scooters and personal water propulsion devices are transforming how we interact with lakes, rivers, and oceans. They offer an exhilarating way to explore more, see more, and expend less energy doing it. Among the innovative options available, the ASIWO U1 Universal Underwater Scooter stands out with a unique proposition: it's not just a handheld scooter for diving and snorkeling, but also a motor you can attach to your paddleboard or kayak.

This 2-in-1 functionality makes the U1 a potentially game-changing gadget for multi-sport water enthusiasts. But does it live up to the hype? In this post, we'll dive deep into the ASIWO U1, examining its performance where it counts and sharing what users are saying about their experiences.

Powering Through the Water: ASIWO U1's Performance

The ASIWO U1 packs a serious punch with its 1100W motor. This high wattage for a device of its class means it's capable of generating significant thrust, whether you're gliding through a coral reef or motoring across a calm lake on your SUP.

It features three adjustable speed modes, allowing you to tailor the power to your activity:

  • Slow Mode: Perfect for leisurely sightseeing or conserving battery on longer excursions, providing a gentle, steady push.
  • Middle Mode: A versatile speed offering a good balance of speed and efficiency for covering moderate distances.
  • Fast Mode: Unlocks the full 1100W, delivering maximum thrust for quick transit or overcoming currents. This is where you'll feel the "turbocharge" effect most strongly!

The maximum speed can reach up to 10 feet per second (approx. 3 m/s or 12 km/h) in fast mode. This provides a substantial boost compared to swimming or paddling alone. The thrust peaks at an impressive 37.47 lbsf (17 kgf), which is plenty to propel an adult with ease or give your paddleboard a significant speed increase. The hydrodynamic design also reportedly helps maximize this power efficiently.

Related reading: ASIWO U1 Diver Propulsion Vehicle: Enhance Your Water Adventures

Under the Hood: Key Specifications

Understanding the technical specifications is crucial for assessing the U1's capabilities and limitations:

Depth Rating

The U1 is built to explore down to 164 feet (50 meters), making it suitable for recreational scuba diving as well as snorkeling and pool use.

Battery & Runtime

It uses a 180Wh (36V 5.0Ah) Lithium-ion battery. The runtime is highly dependent on the speed mode:

  • Slow: Up to 57-60 minutes
  • Middle: Approx. 27-30 minutes
  • Fast: Approx. 15-18 minutes

The battery is detachable, which is great for swapping in a charged spare.

Charging Time

Juicing up the main battery takes around 3-4 hours.

Weight & Size

Weighing 13.2 lbs (6 kg) with the battery and measuring 4.96 x 12.72 x 15.51 inches, it's relatively compact and manageable for transport. It's often mentioned as being portable enough for air travel (verify with your airline!).

Buoyancy

The U1 is typically negatively or neutrally buoyant. Unlike some scooters that float, this one may sink if you let go underwater, unless you use an optional buoyancy kit.

SUP/Kayak Compatibility

This is where the "Universal" comes in. The U1 includes various fin adapters (Slide & Lock, US Fin Adapter, Flip & Lock) designed to fit 99% of paddleboards and inflatable boards.

Control

You can control it with the standard handheld triggers or via a smart watch controller when using it as a SUP/kayak motor.

A man stands on a rocky beach holding a surfboard equipped with the Asiwo U1 underwater scooter, preparing to enter the water.

What Are Users Saying? Performance Meets Real-World Feedback

Aggregating user experiences provides valuable insight into how the ASIWO U1 performs in practice:

The Highs (Pros):

  • True Versatility: The dual function is a massive hit. Users love being able to use one device for multiple water activities, making it a worthwhile investment for varied interests.
  • Impressive Power: The 1100W motor often exceeds expectations, providing a strong and exciting boost in both handheld and SUP modes.
  • Easy to Operate: The controls are intuitive, making it accessible even for those new to underwater scooters or motorized paddleboarding. Setup and attachment to boards are reported as straightforward.
  • Enhanced SUP Experience: Many paddleboarders find it significantly extends their range and allows them to handle wind or currents more easily, turning a workout into a relaxed cruise.
  • Good for Recreational Diving: It provides ample propulsion for exploring dive sites without exhausting your air supply too quickly through strenuous finning.
  • Modular and Customizable: The design allows for optional accessories (like larger outboard batteries or buoyancy kits), adding to its adaptability.

The Lows (Cons & Considerations):

  • Battery Life at Full Power: While the slow mode offers decent runtime, pushing the scooter at medium or fast speeds significantly reduces the battery life. For longer, faster sessions, spare batteries are almost a necessity.
  • Weight: At 13.2 lbs, it's heavier than some smaller, dedicated underwater scooters, which might be a factor for some users when carrying it on land.
  • Buoyancy: The fact that it can sink if released underwater is a point of concern for some and requires either careful handling or the purchase of the buoyancy kit.
  • Cost of Additional Batteries: While spare batteries offer extended use, they represent an additional investment.

FAQs

Q: Is the ASIWO U1 suitable for deep scuba diving?

  • The ASIWO U1 has a depth rating of 50 meters (164 feet), which is suitable for most recreational scuba diving depths. However, it's important to manage your battery usage at depth, as the runtime decreases at higher speeds. For technical or very deep diving, specialized DPVs might be more appropriate.

Q: How long does the battery last on the ASIWO U1?

  • The battery life varies depending on the speed mode used. You can expect up to 60 minutes in Slow mode, around 27-30 minutes in Medium mode, and about 15-20 minutes in Fast mode. Using different speeds throughout your activity will give you a mixed runtime.

Q: Can I use the ASIWO U1 with any paddleboard or kayak?

  • The ASIWO U1 comes with three different fin adapters designed to make it compatible with approximately 99% of paddleboards and inflatable boards. While primarily designed for SUPs and kayaks that accept a fin, its versatility is a major feature. It works as a handheld scooter for any underwater activity.

Conclusion: A Versatile Powerhouse for Water Enthusiasts

The ASIWO U1 Universal Underwater Sea Scooter carves out a unique niche in the market by effectively combining the fun of an underwater scooter with the utility of a paddleboard/kayak motor. Its powerful 1100W motor and multiple speed settings deliver strong performance for recreational use in both modes.

While the battery life in the higher power settings and its neutral/negative buoyancy require consideration (and potentially additional purchases like spare batteries or a buoyancy kit), the overwhelming user feedback points to a highly versatile and enjoyable device.

If you're an active individual or family who enjoys a mix of snorkeling, casual diving, paddleboarding, or kayaking, the U1 offers a compelling all-in-one solution that can significantly enhance your time on and in the water. It's a powerful, user-friendly gadget that brings a new dimension of fun and ease to aquatic exploration.

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