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21700 43.2V 4Ah Li-ion Battery Pack for Special Underwater Equipment

21700 43.2V 4Ah Li – ion Battery Pack for Special Underwater Equipment: 4000mAh capacity, – 20~55℃ tolerance. Powers ROVs, underwater drones—deep – sea – grade reliability.

  • Nominal Voltage:43.2V
  • Rated Capacity:4000mAh
  • Dimension:145×78×63mm
  • Charge Voltage:50.4V
  • Charge Current:2A
  • Discharge Current:10A
  • Discharge Cut-off Voltage:30V
  • Weight:1150g
  • Operating Temperature:-20~55℃

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21700 43.2V 4Ah Li – ion Battery Pack for Special Underwater Equipment | Deep – Sea Power for Submersible Robotics

Introduction

Engineered for extreme submersible missions, the 21700 43.2V 4Ah Li – ion Battery Pack for Special Underwater Equipment delivers high – pressure resilience, 4000mAh endurance, and 43.2V stable power. As a critical Battery Pack for Special Underwater Equipment, it integrates 21700 cells, multi – layer safety, and wide temp tolerance—ideal for ROVs, underwater drones, and deep – sea exploration systems.

 

Nominal Voltage:43.2V
Rated Capacity:4000mAh
Dimension:145×78×63mm
Charge Voltage:50.4V
Charge Current:2A
Discharge Current:10A
Discharge Cut-off Voltage:30V
Weight:1150g
Operating Temperature:-20~55℃
Application:Underwater equipment

 

Core Specifications

Parameter 21700 Li – ion Battery Pack for Special Underwater Equipment Standard Li – ion  Underwater Equipment Impact
Nominal Voltage 43.2V 48V Matches Battery Pack for Special Underwater Equipment power needs
Rated Capacity 4000mAh 3000mAh Powers 6 + hours of submersible ops
Battery Type 21700 Li – ion Generic Li – ion High – energy density for compact underwater bots
Operating Temperature – 20~55℃ 0~40℃ Withstands deep – sea cold, surface warmth
Application Special underwater equipment General use Specialized for Underwater Robot Battery use

Why This Battery Pack Dominates Underwater Missions

1. High – Pressure Power for Submersibles

The 43.2V 4Ah Li – ion Battery Pack for Special Underwater Equipment ensures:
  • “43.2V Stable Output: Drives ROV thrusters, sonar systems, and underwater camera arrays.”
  • “4000mAh Capacity: Runs underwater drones to map 5 + km seabeds per charge—no mid – mission stops.”

2. Deep – Sea – Grade Durability

With 21700 cells and – 20~55℃ operation:
  • “Pressure – Resistant Casing: Survives 100 + m depth pressure, protecting battery and submersible bots.”
  • “Corrosion – Proof Design: Resists saltwater, humidity in marine environments—no battery degradation.”

3. Multi – Layer Safety for Marine Operations

Integrated protections (short – circuit, overcharge) provide:
  • “Underwater – Critical Safety: Prevents electrical faults during deep – sea exploration—zero risk to equipment.”
  • “Reliable Cycle Life: Maintains 80% capacity after 500 + cycles—low maintenance for research vessels.”

Application Scenarios

1. Remotely Operated Vehicles (ROVs)

The Li – ion Battery Pack for Special Underwater Equipment powers:
  • “Industrial ROVs: 43.2V output supports pipeline inspection, underwater welding in offshore rigs.”
  • “Research Drones: 4000mAh capacity enables 4 + hours of marine biology sampling, deep – sea mapping.”

2. Autonomous Underwater Vehicles (AUVs)

For oceanographic missions:
  • “Survey AUVs: Stable 43.2V power ensures 3D seabed scanning, temperature – salinity profiling.”
  • “Military Submersibles: Operates at – 20℃ in Arctic seas, 55℃ in tropical reefs—no performance loss.”

 

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Customized Battery & Charging Solutions for Robotics

We offer full OEM/ODM services to meet the unique power needs of your robotic systems, AGVs, AMRs, and automated equipment. Whether you need a standard solution or a fully customized design, we are ready to support your project.

Battery Customization

  • Voltage & Capacity Tailoring (e.g., 12V, 24V 48V.72V)
  • Cell Selection: LiFePO4 / NMC / 18650 / 26650 / 21700
  • Communication Protocols: RS232 / RS485 /CAN / Modbus
  • Protection Levels: lP54,lP65. and more
  • Size & Shape Adaptation for Any Robot Platform

Charger Integration

  • Smart Chargers with Fast Charging Support
  • Multi-voltage & Multi-current Configurations
  • Multi-model compatible BMS
  • Support for Safety Features: Overcharge Overheat, Short Circuit Protection etc
  • Optional Communication Interface for Intelligent Monitoring

Full System support

  • Desian,Assembly, Testing. and Mass Production
  • Multi-voltage & Multi-current Configurations
  • Custom Labeling, Branding, and Packaging
  • Global Certification Support: CE, UN38.3, KC,lEC, etc
  • Quick Sample Delivery & Technical Documentation
  • Dedicated Engineering Team for Custom Projects

Our Commitment to Excellence

We are dedicated to providing unparalleled service and support for all your robotic battery and charging needs.
Here’s how we ensure your success

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