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Dive Computer Battery Change

Jun 8, 2021 | Services, We Are. . .

If I can buy a service kit for my dive computer online or via an online market place – its only an oring and a battery change after all, is it not? Why should I get Rec2Tec Diving to complete this work for me?

Whenever our trained service technicians carry out a battery change on a dive computer they perform a pressure test which will indicate whether all the dive computer seals are fully intact and properly seated. By following a set process when pressure testing, it is obvious to the technician that there is a problem without causing any water damage to the internals of the computer.

Battery Kit

To carry out the pressure test a chamber that provides both air and water pressurisation like the one shown below is required. As with all things, a good, reliable and accurate test chamber is expensive. To begin we suspend the computer in the air and then pressurise the chamber. Should the dive computer have a damaged seal around any of the push buttons or battery compartment this will allow harmless air to be forced into the spaces. Once a suitable amount of time has passed the computer is submerged into the water before being rapidly depressurised, causing the air to expand quickly. If there is a leak it will be visible as a stream of bubbles that the technician will be able to identify.

Pressure Test Chamber

Assuming the air pressure test is passed successfully then dive computer moves on to a function test in which the computer is submerged and pressurised to 50m. The purpose of the test is to ensure the dive computer accurately measures the depth compared to the chamber analogue gauge, records time and nitrogen loading. After a short dive period the chamber is quickly depressurised to safety stop depth to trigger the ascent alarms and stop warnings. The computer is then left to finish any mandatory stops to prevent unnecessary penalisation before being slowly ascended to surface pressure and removed from the water. A final check of the memory log and no-fly timer before the dive computer returned to the customer.

This provides a thorough test of all the critical elements of the dive computer.

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