Mares LED tank transmitter module Battery question

[ChangeAgent]

Quad Air dive computer with LED tank transmitter.
My wife has gotten this one for her birthday. We have not tested or connected it at all but since I am the technical part of our buddy team I wonder if there is any way to see if the battery in the Module is full or empty. I seem to not find anything in the manuals.
I ask as we used to have a dealership long ago and have seen that batteries at the time of sale are not full since they had been in storage for a long time. It would also be great information later on.
LED TANK MODUL - Product No: 414319 + Quad Air
Thanks

 

[Belzelbub]

I'm not 100% familiar with the Mares version, but pretty much every transmitter needs to be connected to a regulator that is connected to a pressurized (and open) tank. The pressure turns it on, then it really depends on the specific computer.

I have PPS transmitters and they include a battery charge level with the transmission. Some computers can display it, others don't. It doesn't actually send the voltage, just a 3 level indicator. Good, Warning, Alert, With my Shearwater, it is included in the log information, so I can check post dive that it's still good. With my Oceanic, it didn't record the information, but I could check the level on the computer.

Apart from that, the only way is to open it up and check the battery with a multimeter.

 

[ChangeAgent]

Apart from that, the only way is to open it up and check the battery with a multimeter.

That one I figured but would not be my favourite. Anyway thanks for the heads-up and the info from your other computers. Hopefully somebody also can help here.

 

[tursiops]

Quad Air dive computer with LED tank transmitter.
My wife has gotten this one for her birthday. We have not tested or connected it at all but since I am the technical part of our buddy team I wonder if there is any way to see if the battery in the Module is full or empty. I seem to not find anything in the manuals.
I ask as we used to have a dealership long ago and have seen that batteries at the time of sale are not full since they had been in storage for a long time. It would also be great information later on.
LED TANK MODUL - Product No: 414319 + Quad Air
Thanks

They use a CR123, which have a very long shelf life. The 150-200 dive rating is at least a year for most folks.
If you are worried, just put in a new one.

 

[ChangeAgent]

If you are worried, just put in a new one.

not so much worried as wanting to know.

 

[tursiops]

not so much worried as wanting to know.

Fair enough. That's why I got a PPS transmitter.
I can find no info on the MARES LED; transmission mode, frequency, signal content, etc.

 

[ChangeAgent]

Fair enough. That's why I got a PPS transmitter.
I can find no info on the MARES LED; transmission mode, frequency, signal content, etc.

Neither can i that is why I asked.

 

[David 🇳🇱🇦🇺]

I used to have a quad air and sender. The computer warns you when the sender battery is low. Then you have a couple of hours of battery time. The computers own battery level is visible as Ok or not in the info screen/menu.

 

[tursiops]

I used to have a quad air and sender. The computer warns you when the sender battery is low. Then you have a couple of hours of battery time. The computers own battery level is visible as Ok or not in the info screen/menu.

Ahhh, the Quad manual says on p7:

"NOTE- The Mares tank module has a range of approximately 1.5m/5ft.- The tank module remains on whenever it senses a pressure above 15bar/220psi. In order to maximize the life of the battery, after a dive close the tank valve and purge the second stage completely. - If a tank module battery is weak, Quad Air alerts you by blinking the battery symbol together with G1 (or G2 or G3) in the upper right corner."​

So there IS an indication of low battery in the transmitter.
As always, RTFM.

 

[ChangeAgent]

As always, RTFM.

I had and overseen it. Mares expert told me (hence my post and I was right they do not know it either).
"The LED transmitter will display transmitter battery level on the Genius and Icon HD. A volt meter will be needed to test the battery level on the transmitter when using the Quad Air."