Preventing flooded battery compartments in your Shearwater Petrel dive computer

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ShearwaterResearch2This is a brief guide on how to prevent the battery compartment of your Shearwater Petrel dive computer from flooding.

Flooded battery compartments are often due to a battery cap that was not  tightened sufficiently.

When a dive computer comes in for repair from a reported flood or moisture problem, it is always tested with the original parts in a pressure pot at a depth of 270ft, or 82.296m. This is done for several hours to find the location of the suspected water leak.

When tightening the battery cap, it is best to use a large coin like a US quarter. Smaller coins, like nickels or dimes are not recommended. The preferred method is to tighten the battery cap down all the way once, wait a few seconds, and then tighten it again. This is called the “Double Tight” check.

It is also a good idea to check the o-ring for dirt and debris (anything that will cause a sealing problem) when you remove the cap for a battery change. Be sure to keep the O-ring lubricated, but not overly, as it can make it difficult to see if there is anything that could prevent a proper seal. Another good practice is to check the battery cap from time to time for tightness between changes.

I hope this information will help you from having any problems. Please feel free to pass this along to others who own a Shearwater Petrel.

Happy Diving!

To find out more about Shearwater products visit www.shearwater.com.

Curt McNamee

Curt McNamee

Curt started diving in 1970 and is currently CCR Trimix Certified. He has been working as the Shearwater US Sales Representative and Service Center for over 9 years.

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