1. Product Overview
This manual provides essential information for the safe and effective use of your movesea Lefeet S1/S1 Pro Underwater Scooter Battery. This high-performance Li-ion Polymer Battery Pack is designed specifically for the Lefeet S1 and S1 Pro underwater scooters, ensuring reliable power for your aquatic adventures.
- Patented Waterproof Structure: Engineered for underwater environments, ensuring durability and safety.
- Quick Replacement: Designed for fast battery changes, allowing replacement in approximately 5 seconds.
- Airline Compliant: Meets air carrying policies, making it convenient for travel worldwide.

Figure 1.1: The Lefeet S1/S1 Pro Underwater Scooter Battery, showcasing its compact design and connection points.

Figure 1.2: A detailed view of the Lefeet S1/S1 Pro battery, highlighting its robust casing and electrical contacts.
2. Safety Information
Always adhere to the following safety guidelines to prevent injury, damage to the battery, or damage to the scooter.
- Do not disassemble, puncture, or modify the battery.
- Keep the battery away from fire, high temperatures, and direct sunlight.
- Avoid short-circuiting the battery terminals.
- Use only the charger specified by movesea for this battery.
- Do not immerse the battery in water unless it is properly sealed within the scooter's waterproof compartment.
- Store the battery in a cool, dry place when not in use.
- If the battery shows signs of damage, swelling, or leakage, discontinue use immediately and dispose of it properly.

Figure 2.1: Example of a warning label on the battery, indicating important safety precautions.
3. Installation and Charging
3.1 Battery Installation
The Lefeet S1/S1 Pro battery is designed for quick and secure installation into the scooter body. Ensure the battery and the scooter's battery compartment are dry and free of debris before installation.
- Open the battery compartment cover on your Lefeet S1/S1 Pro underwater scooter.
- Align the battery with the compartment, ensuring the electrical contacts match the scooter's terminals.
- Gently push the battery into place until it clicks securely.
- Close and seal the battery compartment cover firmly to ensure waterproof integrity.

Figure 3.1: Illustration showing the battery dimensions and how it fits into the scooter's compartment, emphasizing quick replacement.
3.2 Battery Charging
To charge the battery, use the official movesea charger provided with your Lefeet S1/S1 Pro scooter or purchased separately. Charging typically takes 2.5 hours.
- Remove the battery from the scooter.
- Connect the charger to a power outlet.
- Connect the charger's output plug to the battery's charging port.
- Monitor the charging indicator on the charger (refer to your charger's manual for specific light patterns).
- Once fully charged, disconnect the charger's output plug from the battery and the charger from the power outlet.
4. Operation
Once installed, the battery powers your Lefeet S1/S1 Pro underwater scooter, enabling its propulsion system. Ensure the battery is fully charged before each use for optimal performance and dive time.

Figure 4.1: An individual operating the Lefeet S1 Pro underwater scooter with dual motors, powered by the battery.

Figure 4.2: A diver utilizing the Lefeet S1 Pro underwater scooter with a single motor configuration, demonstrating its maneuverability.

Figure 4.3: A scuba diver navigating underwater with the Lefeet scooter, showcasing its application in diving activities.
The battery's design allows for seamless integration with various Lefeet S1 and S1 Pro accessories, such as the Dual Jet Rail Kit, Single Grip Rail Kit, Scuba Booster Strap Kit, Scuba Tank Mounts, Floating Fins, Neutral Buoyancy Tank, and Multi-Purpose Mount Kit, enhancing the versatility of your underwater scooter.

Figure 4.4: An overview of various accessories compatible with the Lefeet S1 and S1 Pro, all powered by the battery.
5. Maintenance and Storage
5.1 Cleaning
- After each use, especially in saltwater, rinse the battery exterior with fresh water.
- Wipe the battery dry with a soft, clean cloth.
- Ensure the electrical contacts are clean and dry before storage or re-installation.
- Do not use harsh chemicals or abrasive materials for cleaning.
5.2 Storage
- For long-term storage, charge the battery to approximately 50-60% capacity.
- Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures.
- Avoid storing the battery in fully charged or fully discharged states for extended periods.
- Periodically check the battery's charge level during long-term storage and recharge to 50-60% if necessary.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not charging | Charger not connected properly; Faulty charger or cable; Battery too hot/cold; Battery fault. | Ensure secure connections. Try a different outlet. Check charger for damage. Allow battery to reach room temperature. Contact customer support if issues persist. |
| Scooter not powering on with battery installed | Battery not fully charged; Battery not installed correctly; Battery contacts are dirty; Battery fault. | Charge the battery fully. Re-install the battery, ensuring it clicks into place. Clean battery and scooter contacts. Test with another battery if available. |
| Reduced operating time or performance | Battery not fully charged; Battery degradation; Extreme water temperature. | Ensure full charge before use. Battery capacity naturally decreases over time; consider replacement. Operating in very cold water can reduce battery efficiency. |
7. Technical Specifications
Below are the key technical specifications for the movesea Lefeet S1/S1 Pro Underwater Scooter Battery (Model: 8503456).
| Specification | Value |
|---|---|
| Brand | movesea |
| Model Name | S1 Pro |
| Manufacturer Reference | 8503456 |
| Battery Type | Li-ion Polymer Battery Pack |
| Battery Voltage | 25.2 Volts |
| Rated Capacity | 4400 mAh |
| Rated Energy | 97.68 Wh |
| Charging Current | 3 A |
| Charging Time | 2.5 hours |
| Charging Temperature | 50°F – 113°F (10°C – 45°C) |
| Net Weight | 1.68 ± 0.044 lb (approx. 762 - 782 grams) |
| Recommended Product Usage | Scooter (Underwater Scooter) |
| Reusability | Rechargeable |

Figure 7.1: Image displaying key battery specifications, often found on product packaging or labels.
8. Warranty and Support
For information regarding warranty coverage, technical support, or replacement parts for your movesea Lefeet S1/S1 Pro Underwater Scooter Battery, please refer to the official movesea website or contact their customer service directly.
You can visit the official movesea store on Amazon for more products and support: movesea Amazon Store.