Engineered for marine communication excellence, the 21700 25.2V 4.9Ah Li – ion Battery for Underwater Walkie-Talkies delivers submersible – grade endurance, 4900mAh capacity, and 25.2V stable power. As a critical Li-ion Battery for Underwater Walkie-Talkies, it integrates 21700 cells, multi-layer safety, and wide-ranging temp tolerance—ideal for diver radios, offshore operations, and marine rescue systems.
Nominal Voltage：25.2V
Rated Capacity：4900mAh
Dimension：165*76*30mm
Charge Voltage：29.4V
Charge Current：≤2.45A
Discharge Current：5A
Discharge Cut-off Voltage：19.25V
Weight：550g
Operating Temperature：-20～60℃
Application：Underwater walkie-talkies, underwater equipment
The 25.2V 4.9Ah Li-ion Battery for Underwater Walkie-Talkies ensures:
- “25.2V Consistent Output: Drives radio transceivers, waterproof microphones, and LED indicators for clear, uninterrupted signals.”
- “4.9Ah Capacity: Supports 6 + hours of diver – to – diver comms—no mid – mission signal drops during critical operations.”
With 21700 cells and – 20~60℃ operation:
- “Pressure – Resistant Casing: Survives 50 + m depth pressure, protecting battery and walkie – talkies from damage.”
- “Saltwater – Proof Design: Resists corrosion in marine environments—ensuring no battery degradation over time.”
Integrated protections (short-circuit, overcharge) provide:
- “Diver-Critical Safety: Prevents electrical faults during underwater communication—zero risk to users and equipment.”
- “Reliable Cycle Life: Maintains 80% capacity after 500 + cycles—low maintenance for frequent marine use.”
The Li – ion Battery for Underwater Walkie-Talkies powers:
- “Commercial Diver Radios: 25.2V output supports clear audio and long – range signals in offshore rig inspections.”
- “Rescue Team Radios: 4.9Ah capacity enables 4 + hours of continuous comms during marine emergencies.”
For oil rigs, marine construction:
- “Offshore Worker Radios: Stable 25.2V power ensures weather – proof communication in stormy seas.”
- “Cold – Water Operations: Operates at – 20℃ in Arctic zones, 60℃ in tropical waters—no performance loss.”
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