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Aladin® Air X and Air Z pressure transmitter DIY battery exchange


The information on this site is for personal use only and is exclusively performed at your own risk without liability of this site, contributors, associates, and/or site operator. This information is not allowed for use in any commercial form or in any other way.

To access the battery in the transmitter you will need to remove the epoxy/cement covering the three screw holes (T8-Torx). This is accomplished by drilling a 1mm hole in the center of the bead in which the remnants are removed by using a pick or other tool.

WARNING! Aladin® dive transmitters are oil-filled. Do not discard the oil as it must be reused when the battery change is completed. You must carefully extract and store the oil. It is strongly recommended to use a syringe/syrette (no needles) to extract and store. Use the rubber gloves !

Unscrew the 3 T8 screws and very carefully remove the black cover. It is recommended to leave the transmitter connected to the first stage to do this step. Mind the oil at stated above.

For a replacement battery you can either use the TADIRAN SL-761PT or SAFT LS14250CNA. Ensure your battery has the correct size, voltage, and tab position.

Before proceeding, maintain your awareness of potential short circuits, static discharge, and inadvertent contact of the plastic case by the soldering iron. Pay special attention as to not damage the wires on the transmitter coil -- they are very thin !
 

There are two methods to perform a battery exchange:

Method "A" utilizes a "backup" battery and eliminates the need for the restart procedure, if performed correctly,
BUT is usable ONLY if the battery isn’t completely discharged. I strongly recommend this method !

Method "B" involves a complete removal and loss of battery power and is usable, if the battery is discharged.
 


Method "A": You will need a 3V or 3,6V lithium battery (CR2032 or general equivalent) and Schottky diode (BAT85 or eqv).

  • Proceed with careful consideration as to not short circuit the electronics. Refer to the picture where the "white" wire is negative (-) and the "red" wire is positive (+).
  • Connect the backup battery "BT2" as shown in the picture on the right. "BT2" is the CR2032 or equivalent.
  • Desolder the negative "-” of the battery first, then the positive “+”. Address and clean the mounting holes for both the positive (+) and negative (-) terminals – this step is recommended but not required.
  • Replace battery.
  • Remove the BT2 backup battery.

Unfortunately, when this method is used, there may be a problem with the "battery counter" after some time (month, years) - the transmitter may signalling LOW BATT although the battery is good. No solution for this at this time...

Method "B":

  • Desolder the negative "-” of the battery first, then the positive “+”. Address and clean the mounting holes for both the positive (+) and negative (-) terminals – this step is recommended but not required.
  • Replace battery.
  • After the battery exchange is completed the transmitter may be need to be reset. This procedure is not 100% vetted, as of yet

Reset procedure :

  • Attach the transmitter to the first stage and place it under pressure.

  • For a period of 10 seconds, connect/disconnect a resistor (5-10kOhm) between the square pin (reference the picture - the square pin is beside of the white wire ) and adjacent pin or negative point of the battery.
    Click on the picture for a larger reference circled in "red", located on the lower, left-hand side of the image.
    If you have an oscilloscope, you can use it for watching when the transmitter start work -then the reset is finished.

  • Close cylinder valve and purge pressure from first stage. Wait >20 seconds.

  • Execute the "PAIR" procedure with your Aladin®. If unsuccessful, repeat all reset steps.

This procedure is not 100% reliable and may have an unexpected consequences !!!!

See instruction video (~50MB]

 


Uwatec Aladin and other trademarks are owned by their respective companies or organizations
 




Windows, Uwatec Aladin, Suunto, Nitek a další  jsou ochranné známky a autorská práva, která jsou majetkem svých příslušných vlastníků.
Windows, Uwatec Aladin, Suunto, Nitek and other  trademarks are owned by their respective companies or organizations