Asiwo Manta Underwater Scooter (Manta 40M) Deep-Dive Review
If you're looking for an underwater scooter that balances pulling power with travel compliance, the asiwo manta underwater scooter (Model EL-SS01 / Manta 40M) is one of the most practical choices available. Built specifically for recreational divers, snorkelers, and reef explorers, this dual-motor diver propulsion vehicle (DPV) delivers up to 1.5 m/s (approx. 3.3 mph) top speed and operates reliably down to 40 meters (131 feet). Its main advantage is its compact 126Wh lithium-ion battery system, which stays below TSA airline carry-on limits while generating enough thrust to pull an adult diver with gear. If you want to cut down on leg fatigue and extend your air supply without hauling a heavy 30-pound commercial unit, the Manta 40M deserves serious consideration.
When you take a close look at how modern sea scooters are designed, you quickly notice two distinct camps: bulky professional rigs built for cave exploration and small recreational toys that stall out the moment you swim against a gentle current. The ASIWO Manta fits right between these extremes. It gives you realistic power for everyday diving conditions while keeping the total weight under 7.7 pounds (3.5 kg).
---Key Technical Specifications & Overview
To understand how this scooter performs in open water, let's look at the basic specifications documented in the Official ASIWO Manta User Manual and field testing parameters.
| Specification | Manufacturer Rating / Verified Data |
|---|---|
| Model Designation | ASIWO Manta (EL-SS01 / Manta 40M) |
| Maximum Depth Rating | 40 meters / 131 feet |
| Speed Settings | 3 Gears (Low: 0.8 m/s, Med: 1.2 m/s, High: 1.5 m/s) |
| Motor Configuration | Dual Brushless Electric Motors (Shrouded Props) |
| Battery Capacity | 126Wh (25.2V, 5000mAh) Rechargeable Li-ion |
| Max Runtime | 35 to 45 minutes (depending on speed mode and load) |
| Recharge Time | Approx. 2 to 3 hours |
| Unit Weight (With Battery) | 3.5 kg / 7.7 lbs |
| Buoyancy Profile | Slightly Positive in Saltwater (Floats if released) |
| Action Camera Mount | Integrated top-center mount (GoPro compatible) |
Engineering & Propulsion Design
The core design feature of the asiwo manta underwater scooter is its symmetrical dual-thruster layout. Rather than relying on a single large central propeller—which can create torque twist that pulls your arms sideways—ASIWO uses two smaller brushless motors housed in protective safety shrouds.
This layout offers several practical advantages for divers and swimmers:
- Straight-Line Stability: Counter-rotating or aligned dual thrusters neutralize motor torque, letting you glide forward without constantly flexing your wrists to stay on course.
- Finger Safety: The narrow spacing on the outer intake grilles stops fingers, loose hair, or seaweed from touching the spinning propeller blades. This protection is especially valuable when sharing the unit with younger swimmers.
- Hydrodynamic Profile: The flattened, wing-like shape mimics a manta ray. This wide profile spreads out water resistance and creates a stable base when attaching an action camera.
Real-World Water Performance & Depth Handling
A frequent problem with entry-level water scooters is that their speed numbers only apply in a swimming pool while pulling a light user. When you take a scooter into open water wearing a wetsuit, mask, and fin setup, hydrodynamic drag increases significantly.
Thrust and Speed Breakdown
In actual dive conditions, the Manta 40M handles weight load surprisingly well across its three speed modes:
- Low Gear (approx. 0.8 m/s / 1.8 mph): Ideal for slow reef viewing and conserving battery. This speed matches a relaxed fin-kick pace, letting you hover over coral formations without kicking up silt.
- Medium Gear (approx. 1.2 m/s / 2.7 mph): The standard cruising speed. It comfortably pulls a fully equipped diver against mild surface chop or minor tidal flow without rapidly depleting the battery.
- High Gear (approx. 1.5 m/s / 3.3 mph): Provides maximum power for swimming through mild currents or returning to the boat quickly. Keep in mind that continuous use in high gear drains the battery significantly faster.
Depth Rating Performance
Rated for 40 meters (131 feet), the Manta 40M covers the complete depth range for standard recreational diving. During deep water descent, water pressure increases by one atmosphere every 10 meters (33 feet). At 40 meters, the housing experiences roughly 58 psi of pressure.
ASIWO uses heavy-duty O-ring seals around the battery compartment and sealed magnetic switch actuators to prevent water entry. Magnetic switches eliminate physical holes through the outer casing, reducing potential leak points under high pressure.
---Battery System, Runtime, and Airline Travel Safety
Battery management is a crucial factor when picking an underwater propulsion unit. A common headache for traveling divers is buying gear only to find out airlines ban the battery pack due to safety restrictions.
Airline Compliance Details
Under Federal Aviation Administration (FAA) and International Air Transport Association (IATA) guidelines, lithium-ion batteries rated under 100Wh are allowed in carry-on luggage without special approval, while batteries between 100Wh and 160Wh are permitted in carry-on luggage with airline approval (limit 2 per passenger). The ASIWO Manta's 126Wh battery fits right into this 100–160Wh carry-on bracket. Never place this battery in checked baggage.
Runtime Breakdown by Operating Mode
Based on operational testing and feedback from Reddit diving gear community discussions, battery drain varies depending on user weight, water temperature, and gear setup:
- Snorkeling / Low Speed: Expect roughly 35 to 45 minutes of intermittent throttle use.
- Mixed Recreational Diving: Standard underwater use with gear yields roughly 25 to 35 minutes of actual runtime.
- Continuous High-Speed Run: Running non-stop at full throttle drains the pack in about 15 to 20 minutes.
Because battery swaps require drying off the unit to keep water out of the housing, carrying a spare battery pack in your dive bag is a great way to extend back-to-back reef sessions.
---Controls, Safety Features, and Handling
Operating the asiwo manta underwater scooter is straightforward, even for first-time users. The handles sit comfortably on each side, placing the trigger switches directly under your index fingers or thumbs.
Dual-Trigger Operation
To keep the scooter running, both hand triggers must be pressed simultaneously. If you drop the scooter or let go with either hand, the motors stop instantly. This safety feature prevents the unit from motoring away from you down into deep water or toward swimmers.
Speed Selection and Indicator Panel
Speed changes are controlled using a center mode button located near the battery indicator LEDs. Bright LED lights display both your active speed mode and remaining battery life, making it easy to monitor power at a glance underwater.
Buoyancy Dynamics
In saltwater, the Manta 40M has slightly positive buoyancy. If you let go of the handles at shallow depths, it slowly floats to the surface rather than sinking. In freshwater lakes or swimming pools, reduced water density makes the unit closer to neutral or slightly negative, so using a wrist lanyard is always recommended.
---Video Review & Real-World Demonstration
Seeing how the unit handles in open water helps illustrate its size and thrust output. Watch the detailed video review below to see the scooter in action:
Comparing ASIWO Manta 40M to Main Competitors
To help you decide if this is the right DPV for your needs, here is how the ASIWO Manta compares against similar recreational underwater scooters on the market:
| Feature / Model | ASIWO Manta 40M | Sublue WhiteShark Mix | Geneinno S2 |
|---|---|---|---|
| Depth Limit | 40m / 131ft | 40m / 131ft | 30m / 98ft |
| Top Speed | 1.5 m/s (3 Speeds) | 1.5 m/s (Single Speed) | 1.2 m/s (2 Speeds) |
| Battery Capacity | 126Wh | 121Wh | 97Wh |
| Flight Friendly | Yes (Carry-on approval) | Yes (Carry-on approval) | Yes (Under 100Wh) |
| Action Mount | Integrated Top Mount | Integrated Top Mount | Integrated Mount |
The Manta 40M stands out by offering three distinct speed modes, whereas several competing models in this price range only offer a single speed option. Having three speeds gives you better control over battery drain and maneuvering speeds in delicate underwater environments.
---User Feedback, Community Reputation, and Trust Pilot Rating
Before purchasing dive equipment online, checking long-term reliability and verified customer service performance is essential. Customer review tracking across independent platforms shows consistent scores for build quality and response times.
You can check active customer rating trends directly on the Official ASIWO Trustpilot Review Page. User feedback generally highlights three main points:
- Positive Points: Lightweight design makes it easy to carry in beach bags; smooth throttle engagement; excellent fun for family trips and shallow reef snorkeling.
- Critical Notes: Battery charging takes around two to three hours, so ordering a spare battery is recommended for long dive days; motor thrusters can get clogged if operated over loose sand or silty lake bottoms.
Maintenance Guide for Long Gear Life
Saltwater immersion is harsh on all marine gear. Salt crystals accumulate in tiny seal gaps, and leftover moisture can cause corrosion on metal contacts over time. Follow these simple maintenance procedures after every dive session to keep your scooter working smoothly:
- Freshwater Soak: Submerge the complete unit in clean, fresh water for 15 to 20 minutes after saltwater use. Operate the triggers several times while submerged to flush trapped salt out of the trigger springs and housings.
- Drying Before Opening: Thoroughly dry the housing with a clean towel before opening the battery compartment. Even a few drops of saltwater inside the battery chamber can short the gold contact pins.
- O-Ring Inspection & Silicone Grease: Check the rubber O-rings around the main battery door for hair, sand grains, or cracks. Apply a thin film of silicone grease to keep the rubber pliable and ensure a watertight seal.
- Storage Charge Level: If you're storing the scooter away for winter, store the lithium battery at roughly 50% to 60% charge in a cool, dry space. Avoid storing lithium batteries completely empty or at 100% full for extended periods.
Shipping, Warranty, Support, and Payment Options
When ordering directly from the authorized retailer, make sure to review their standard terms and store policies:
- Shipping Details: Delivery options, warehouse origins, and transit schedules can be found on the Official SeaScooter Shipping Policy Page.
- Warranty Terms: ASIWO covers manufacturing faults and hardware failures under their standard policy outlined on the ASIWO Limited Warranty Page.
- Customer Service: For direct technical questions, order tracking, or spare replacement parts, contact support using the Official ASIWO Support Center.
- Payment Options: Payments are processed through encrypted checkout gateways supporting major credit cards, Shop Pay, Apple Pay, and Google Pay on the Official Secure Checkout Page.
Frequently Asked Questions
Can I take the ASIWO Manta scooter on commercial flights?
Yes. The included 126Wh lithium-ion battery falls within the 100Wh to 160Wh carry-on allowance set by TSA and international aviation authorities. Keep the battery pack in your carry-on luggage and notify gate agents during security screening if requested.
What happens if I accidentally drop the scooter underwater?
In saltwater conditions, the Manta 40M has slightly positive buoyancy, so it slowly floats to the surface if released. In freshwater environments, it stays close to neutral. Using the included safety wrist lanyard prevents the unit from drifting away.
Is the battery easy to swap during a day trip?
Yes, swapping the battery takes less than two minutes. However, you must completely dry off the unit and your hands before opening the battery door to prevent water droplets from touching internal connectors.
Can children use this underwater scooter safely?
Yes, under adult supervision. The enclosed propeller grilles keep fingers away from the spinning blades, and the dual-trigger setup ensures the thrusters stop instantly as soon as either hand releases a handle.
Final Thoughts & Recommendation
The asiwo manta underwater scooter strikes an ideal balance between weight, thrust, depth performance, and travel convenience. It isn't built for heavy multi-hour cave exploration, but for reef diving, vacation snorkeling, underwater photography, and family ocean fun, it performs exceptionally well without requiring heavy equipment carts.
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