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Preventing flooded battery compartments in your Shearwater Petrel dive computer



Shearwater Petrel

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

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.

Dive Training Blogs

Dream Dive Locker Build Out Part II: Blank Slate (Watch Video)



I owe you all an update on the dream dive locker build out! We’ve been working hard behind the scenes to build my dream dive locker/scuba classroom/office. In this installment, I’m going to answer your questions and comments from the first video in this series.

Scuba diving is my passion and to have a dedicated space for all my dive gear, as well as a hang out spot for my students, is a dream come true.

Let me know your color choice! 1, 2, 3, 4 or 5!

Thanks for watching!



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Miscellaneous Blogs

The BiG Scuba Podcast… with Stephan Whelan



Next in a new series of podcasts shared by our friends Gemma and Ian aka The BiG Scuba Podcast…

Ian and Gemma chat to Stephan Whelan.  Stephan is the Founder and Publisher of His passion for the underwater world started at 8 years-old with a try-dive in a hotel pool on holiday that soon formulated into a lifelong love affair with the oceans and led him to become one of the leading figures in the diving media industry.

Stephan got bitten by the diving bug early in life. His first scuba experience was a try-dive when he was eight years old on a family holiday in Europe, and from that moment, he was addicted. He learned to dive properly with BSAC (British Sub Aqua Club) as soon as he could at school and then did his BSAC Assistant Instructor when he turned 16. By the time he was heading to university in 1996, he was hooked on teaching and diving as much as he could.

By the time he started studying at university, he decided to have a go at flexing his web-design skills by publishing some of the stories he had built up about various ‘challenging’ students and dives he had encountered, and so (as it was known then) was created. He published numerous personal stories until 1998 when other writers began enquiring about contributing to the site with their tales, and it was at this moment he decided to make it more like a magazine format and began asking for volunteer helpers. He got a couple of editors on board, and plenty of writers began contributing. (or DB as it’s become to be known) is now one of the most-popular diving websites in the world and has grown to publish over 9,000 articles covering all sorts of topics like Freediving, Scuba Diving, Ocean Advocacy, and Diving Travel all the while keeping over half-a-million passionate divers from the diving community connected every month through the forums, large social media following, mobile app, and recently launched podcast.








Find more podcast episodes and information at and on most social platforms @thebigscuba 

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