Engineered for marine communication, the 18650 21.6V 20Ah Li-ion Battery for Underwater Walkie Talkie delivers submersible – grade endurance, 20000mAh capacity, and 21.6V stable power. As a critical Li-ion Battery for Underwater Walkie Talkie, it integrates 18650 cells, multi – layer safety, and wide temp tolerance—ideal for diver radios, offshore ops, and marine rescue systems.
Nominal Voltage：21.6V
Rated Capacity：20000mAh
Dimension：187*83.5*75mm
Charge Voltage：25.2V
Charge Current：≤5A
Discharge Current：≤5A
Discharge Cut-off Voltage：16.2V
Weight：1900g
Operating Temperature：-20～60℃
Application：Underwater walkie talkie
The 21.6V 20Ah Li-ion Battery for Underwater Walkie Talkie ensures:
- “21.6V Consistent Output: Drives radio transceivers, waterproof microphones, and LED indicators.”
- “20Ah Capacity: Supports 6 + hours of diver – to – diver comms—no mid – mission signal drops.”
With 18650 cells and – 20~60℃ operation:
- “Pressure – Resistant Casing: Survives 50 + m depth pressure, protecting battery and walkie – talkies.”
- “Saltwater – Proof Design: Resists corrosion in marine environments—no battery degradation.”
Integrated protections (short – circuit, overcharge) provide:
- “Diver – Critical Safety: Prevents electrical faults during underwater comms—zero risk to users.”
- “Reliable Cycle Life: Maintains 80% capacity after 500 + cycles—low maintenance for rescue teams.”
The Li-ion Battery for Underwater Walkie Talkie powers:
- “Commercial Diver Radios: 21.6V output supports clear audio, long – range signals in offshore rigs.”
- “Rescue Team Radios: 20Ah capacity enables 4 + hours of continuous comms during marine emergencies.”
For oil rigs, marine construction:
- “Offshore Worker Radios: Stable 21.6V power ensures weather – proof comms in stormy seas.”
- “Cold – Water Operations: Operates at – 20℃ in Arctic zones, 60℃ in tropical waters—no performance loss.”
