Portable Underwater Scooter Battery Chargers with Certifications

Henryuan produces sealed portable lithium-ion battery chargers for underwater scooters and other battery-powered marine equipment, with custom output voltage, charging current, connectors, cable assemblies, and regional AC plugs. These portable chargers are suitable for lithium-ion battery systems used in underwater scooters, DPVs, marine propulsion equipment, and other portable electric vehicles. For example for the 6S 22.2V lithium battery, 7S 25.9V lithium battery, 10S 37V lithium battery, 11S 40.7V lithium battery, 12S 44.4V lithium battery.etc

Inetrnational Underwater Scooter Charger Configuration

• Input Voltage: AC 100–240V, suitable for global use
• Protection: Over-voltage, over-current, short-circuit, reverse polarity
• Charging method: CC-CV-Trickle, 3 stage.
• LED Indicators: Charging and fully charged status
• Sealed Enclosure/Fanless Cooling: Natural convection, fanless configuration and slient work. Preventing the ingress of dust and moisture, extending the lifespan.
• Protection: OVP / OCP / SCP / reverse-polarity protection.
• Housing: Compact sealed portable enclosure.
• Output connection: Customized according to battery and scooter charging port.
• Cable: Custom length and gauge.
• AC plug: EU / UK / US / AU and other regional configurations.
• Safety Certifications: CE, GS, UKCA, SAA, PSE, UL, ETL, cUL, KC, CCC

Core Technology: Optimized 3-Stage Charging Profile (Take 12S 50.4V 4A li-ion charger for example)

Our underwater scooter chargers use the controlled three-stage charging process to deliver energy efficiently while helping protect the battery from overcharging and unnecessary thermal stress.

• Stage 1: Constant Current (CC) | Fast charging. The charger delivers a max current output while the battery voltage gradually rises. This is the main energy-transfer stage, allowing the battery to recharge quickly and efficiently.
• Stage 2: Constant Voltage (CV) — Voltage Regulation: When the battery reaches the charger's voltage limit, the charger holds the output at approximately max while the charging current gradually decreases. This controlled taper helps bring the battery safely toward full charge without over charging.
• Stage 3: Trickle / Charge Maintenance — Final Stage: As the charging current falls to the predefined  level, the charger transitions to the final maintenance stage. The output current is greatly reduced or controlled according to the battery status, helping maintain a fully charged battery.

Protection Designed for Lithium-ion Charging Conditions
A marine product may be transported and used in demanding environments, but the charger still needs to handle common electrical faults safely.

• Over-Voltage Protection: Helps protect the connected battery and charging system if the output voltage exceeds the designed limit.
  
• Over-Current Protection: Limits abnormal current conditions caused by an unsuitable load or electrical fault.
  
• Short-Circuit Protection: Helps protect the charger in the event of an output short circuit.
  
• Reverse-Polarity Protection: Provides an additional layer of protection against incorrect DC connection.
  
• Thermal Protection: Henryuan uses thermal design, component selection, PCB layout, heat dissipation, and protection mechanisms to manage operating temperature rather than relying on a single protective component.

Typical Underwater Scooter Chargers

Why Choose Henryuan for Underwater Scooter Chargers?

Henryuan is a China-based OEM/ODM manufacturer specializing in lithium-ion battery chargers, power supplies, and custom cable assemblies. The current charger platforms for 25.2V, 29.4V, 42V, 46.2V, 50.4V and higher-voltage lithium battery underwater scooter systems.
For underwater scooter and DPV applications, Henryuan can support:

• Custom charging current
• Compact portable charger designs
• Sealed enclosure configurations
• Fanless natural cooling
• Custom charging connectors
• Complete charger cable assemblies
• OEM / ODM private labeling
• Prototype and small-batch production
• International certification support
• Production testing and quality control

Rather than forcing an underwater scooter project into an existing charger model, Henryuan can develop the charging solution around the battery, BMS, connector, charging time, and target market. 
For a new underwater scooter or DPV project, send us the battery voltage, cell configuration, capacity, desired charging time, connector type, and target market. Henryuan can evaluate the appropriate charger architecture and develop a customized solution from prototype to production.

Technical Q&A of Henryuan Underwater Scooter Charger

Q: Why is a sealed charger useful for an underwater scooter? 
A: A sealed portable charger can help reduce the risk of dust and moisture entering the charger enclosure while also providing a compact form factor for transport and storage. Henryuan's underwater scooter charger platform uses a compact sealed enclosure and fanless natural-convection cooling.

Q: Does a sealed charger need a cooling fan?
A: Not necessarily. At approximately 201.6W output, a properly engineered charger can be designed around natural convection and optimized heat dissipation instead of a mechanical fan.
A fanless architecture eliminates a moving component and can help reduce noise and maintenance requirements. However, whether fanless cooling is appropriate depends on charger efficiency, component losses, PCB layout, enclosure design, ambient temperature, and continuous charging conditions. For this reason, thermal validation is an important part of high-reliability charger development.

Q: Can the connector be customized for an underwater scooter?

• Connector type
  
• Pin configuration
  
• Cable length
  
• Wire gauge
  
• DC output cable
  
• Regional AC power cord
  

This is particularly useful for OEM underwater scooter manufacturers that already have a defined battery enclosure and charging interface.

Q: What other underwater scooter charger voltages does Henryuan offer?

• 25.2V — 6S Li-ion
  
• 29.4V — 7S Li-ion
  
• 42V — 10S Li-ion
  
• 46.2V — 11S Li-ion
  
• 50.4V — 12S Li-ion and higher voltage charging solutions

Different current options are available depending on the voltage platform and model. 

Q: What certifications are available for the underwater scooter charger?

A: Henryuan's underwater scooter charger platform can be configured for international markets with certifications and compliance requirements including: UL, cUL, ETL, CE, GS, UKCA, SAA, PSE, KC and CCC, depending on the final model and target market.

Q: Can Henryuan manufacture a custom underwater scooter charger?

• Battery voltage
  
• Cell configuration
  
• Battery capacity
  
• Charging current
  
• Required charging time
  
• BMS specification
  
• Connector
  
• Cable length
  
• Target market
  
• Certification requirements
  

The charger can then be developed from prototype and engineering validation through pilot production and mass production.

Explore our battery charger solutions for e-mobility applications to learn more about chargers for electric mobility devices, outboard motors and other battery-powered propulsion systems.

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