The VRX is fitted with a rechargeable Lithium-ion battery. A multi-voltage charger is supplied, and it will recharge a completely flat battery in approximately 3 hours
The battery level is shown in percentage on the main front dry screen.
It is not necessary to power up the VR before you dive. The screen will automatically power up within a minute of exposure to an absolute pressure of 1.3 BAR or greater. Note: This means in practice that if you do a very fast descent the VR compouter may not switch on until you are at depth.
VR Dive computers use a derivative of the Buhlmann ZHL 16 algorithm modified to assimilate the latest thinking in practical micro-bubble avoidance for enhanced decompression safety.
The VRx can also be configured to use our new VHM alogrithm. You will note than on decompression dives, the Buhlmann algorithm will prompt for deep-water controlling stops of 2 minutes in duration. Deep-water stops are recognized by their duration (normally two minutes) and + next to the time. It is important these these stops are conducted correctly for a safe decompression as they help to reduce the problems associated with potential micro-bubble growth during an ascent.
Dive computers calculate decompression based on the inert gas partial pressures. This is the only accurate way to estimate decompression requirements. Decompression computers are an aid to decompression and backup tables and depth/time instrumentation should always be carried.