A pressure tolerant battery is specifically engineered to operate reliably and safely under extreme hydrostatic pressure, such as those encountered in deep-sea environments. Unlike traditional sealed batteries that aim to resist external pressure, pressure tolerant batteries are designed to accommodate and equalize the surrounding pressure.
This is primarily achieved through:
- Pressure Compensation: The key principle is to allow the internal components of the battery to be subjected to the same pressure as the external environment. This is often done by filling the battery pack with an incompressible dielectric fluid (like mineral oil) that can transmit the external pressure evenly to the internal cells and electronics. As the external pressure increases, the fluid is compressed, maintaining a balanced pressure differential across the cell walls.
The SWE SeaSafe® pressure tolerant modules can operate up to 6,000M depth.
Our SeaSafe® Direct batteries can operate direct in water. Our SeaSafe II batteries are contained in an oil filled case.
