New cells- just put them in or soak in O2 or ???

colinicky · 13th April 2010, 16:05

So if you have new cells to put in do you just open the packet, fit them, calibrate & thats it or do you need to soak them in O2 first ? Never fitted new cells before & had vauge memories of somethimg about soaking them in O2 ?

Sharky1948 · 13th April 2010, 16:08

That's a new one on me! Just insert, calibrate and go diving.

colinicky · 13th April 2010, 16:11

Quote: (Originally Posted by Sharky1948)

That's a new one on me! Just insert, calibrate and go diving.

Thats what I thought but I've got a cell that fails calibration straight out the packet & was trying to think of any reason why (other than it's an AI !)

luker · 13th April 2010, 16:22

Quote: (Originally Posted by colinicky)

So if you have new cells to put in do you just open the packet, fit them, calibrate & thats it or do you need to soak them in O2 first ? Never fitted new cells before & had vauge memories of somethimg about soaking them in O2 ?

No need to soak in O2 but you do need to expose them to air for a while, It due to the fact when a cell is in a sealed bag it consumes all the available O2 and goes into a state of hibernation.

HTH

Luke

4ster · 13th April 2010, 16:24

If you have had the cell in your unit for 24 hours and it still won't calibrate then you could have a bad cell. I don't know your system, if you are using rEvo dreams and the voltage is too low the Dreams will not calibrate. (I think it is 8.5mV)

Have you tried swapping cells to see if there is a fault in the wiring? Also, put a voltmeter on the cell to check output.

**Gill Envy** · 13th April 2010, 16:29

Quote: (Originally Posted by Sharky1948)

That's a new one on me! Just insert, calibrate and go diving.

That's a new one on me. I've always heard to wait a good 12-24 hours after opening to let them fully activate. If you are swapping out one at a time and have 3-4 cells on an mCCR, then maybe it's not so critical, as you can vote out the new one in your head for a dive or two.

g

colinicky · 13th April 2010, 16:40

Quote: (Originally Posted by 4ster)

If you have had the cell in your unit for 24 hours and it still won't calibrate then you could have a bad cell. I don't know your system, if you are using rEvo dreams and the voltage is too low the Dreams will not calibrate. (I think it is 8.5mV)

Have you tried swapping cells to see if there is a fault in the wiring? Also, put a voltmeter on the cell to check output.

rEvo dream NG + shearwater controller running on 5 cells , no splitter. Have now tried the cell across all 5 positions & nothing .

4ster · 13th April 2010, 16:47

Quote: (Originally Posted by colinicky)

rEvo dream NG + shearwater controller running on 5 cells , no splitter. Have now tried the cell across all 5 positions & nothing .

Sounds like a bad cell to me. Hopefully you can return it for a replacement.

cadblaster3 · 13th April 2010, 17:39

I definetly prefer the soaking overnight in 02. Otherwise it seems to take a few dives and recalibrations before things settle down. It can be an especially useful trick when you find yourself having to change all your cells @ once during a dive trip.

nigelh · 13th April 2010, 18:23

Quote: (Originally Posted by cadblaster3)

I definetly prefer the soaking overnight in 02.

I'm surprised. Since they are supposed to be a six second response time I would have thought that by the time they were screwed in they were long since settled.

I'd love to have a 'dead from new' cell to bits, not that I've ever had one. However they'd be under warranty and even I wouldn't chop up a cell that would get swapped out for a good one. Frankly I'd expect one of those little fine wires to have come off rather than the chemistry to have gone AWOL.

13th April 2010, 16:05	#1 (permalink)
colinicky RBW Member rEvo II Hybrid Mini Titanium Inspiration Vision Join Date: Mar 2005 Location: uk Posts: 1,157	New cells- just put them in or soak in O2 or ??? So if you have new cells to put in do you just open the packet, fit them, calibrate & thats it or do you need to soak them in O2 first ? Never fitted new cells before & had vauge memories of somethimg about soaking them in O2 ?
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13th April 2010, 16:08	#2 (permalink)
Sharky1948 Mike Samsen rEvo III Hybrid Join Date: Mar 2008 Location: Stamford, CT Posts: 222	Re: New cells- just put them in or soak in O2 or ??? That's a new one on me! Just insert, calibrate and go diving.
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13th April 2010, 16:11	#3 (permalink)
colinicky RBW Member rEvo II Hybrid Mini Titanium Inspiration Vision Join Date: Mar 2005 Location: uk Posts: 1,157	Re: New cells- just put them in or soak in O2 or ??? Quote: (Originally Posted by Sharky1948) That's a new one on me! Just insert, calibrate and go diving. Thats what I thought but I've got a cell that fails calibration straight out the packet & was trying to think of any reason why (other than it's an AI !)
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13th April 2010, 16:22	#4 (permalink)
luker RBW Member Ouroboros COPIS Meg with VR URM Join Date: Jan 2007 Location: Portsmouth, UK Posts: 24	Re: New cells- just put them in or soak in O2 or ??? Quote: (Originally Posted by colinicky) So if you have new cells to put in do you just open the packet, fit them, calibrate & thats it or do you need to soak them in O2 first ? Never fitted new cells before & had vauge memories of somethimg about soaking them in O2 ? No need to soak in O2 but you do need to expose them to air for a while, It due to the fact when a cell is in a sealed bag it consumes all the available O2 and goes into a state of hibernation. HTH Luke
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13th April 2010, 16:24	#5 (permalink)
4ster Steve Sprague rEvo Dolphin Join Date: Mar 2006 Location: The Soviet of Washington Posts: 512	Re: New cells- just put them in or soak in O2 or ??? If you have had the cell in your unit for 24 hours and it still won't calibrate then you could have a bad cell. I don't know your system, if you are using rEvo dreams and the voltage is too low the Dreams will not calibrate. (I think it is 8.5mV) Have you tried swapping cells to see if there is a fault in the wiring? Also, put a voltmeter on the cell to check output.
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13th April 2010, 16:29	#6 (permalink)
Gill Envy Shearwater Copis Diver Copis Meg and rEvo III Evolution Join Date: Nov 2005 Location: seattle Posts: 2,005	Re: New cells- just put them in or soak in O2 or ??? Quote: (Originally Posted by Sharky1948) That's a new one on me! Just insert, calibrate and go diving. That's a new one on me. I've always heard to wait a good 12-24 hours after opening to let them fully activate. If you are swapping out one at a time and have 3-4 cells on an mCCR, then maybe it's not so critical, as you can vote out the new one in your head for a dive or two. g __________________ Gill Envy
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13th April 2010, 16:40	#7 (permalink)
colinicky RBW Member rEvo II Hybrid Mini Titanium Inspiration Vision Join Date: Mar 2005 Location: uk Posts: 1,157	Re: New cells- just put them in or soak in O2 or ??? Quote: (Originally Posted by 4ster) If you have had the cell in your unit for 24 hours and it still won't calibrate then you could have a bad cell. I don't know your system, if you are using rEvo dreams and the voltage is too low the Dreams will not calibrate. (I think it is 8.5mV) Have you tried swapping cells to see if there is a fault in the wiring? Also, put a voltmeter on the cell to check output. rEvo dream NG + shearwater controller running on 5 cells , no splitter. Have now tried the cell across all 5 positions & nothing .
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13th April 2010, 16:47	#8 (permalink)
4ster Steve Sprague rEvo Dolphin Join Date: Mar 2006 Location: The Soviet of Washington Posts: 512	Re: New cells- just put them in or soak in O2 or ??? Quote: (Originally Posted by colinicky) rEvo dream NG + shearwater controller running on 5 cells , no splitter. Have now tried the cell across all 5 positions & nothing . Sounds like a bad cell to me. Hopefully you can return it for a replacement.
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13th April 2010, 17:39	#9 (permalink)
cadblaster3 RBW Member Inspiration, Micro rEvo Join Date: Jan 2006 Location: NC Posts: 177	Re: New cells- just put them in or soak in O2 or ??? I definetly prefer the soaking overnight in 02. Otherwise it seems to take a few dives and recalibrations before things settle down. It can be an especially useful trick when you find yourself having to change all your cells @ once during a dive trip. Last edited by cadblaster3; 13th April 2010 at 17:45..
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13th April 2010, 18:23	#10 (permalink)
nigelh RBW Member Join Date: Mar 2005 Posts: 1,383	Re: New cells- just put them in or soak in O2 or ??? Quote: (Originally Posted by cadblaster3) I definetly prefer the soaking overnight in 02. I'm surprised. Since they are supposed to be a six second response time I would have thought that by the time they were screwed in they were long since settled. I'd love to have a 'dead from new' cell to bits, not that I've ever had one. However they'd be under warranty and even I wouldn't chop up a cell that would get swapped out for a good one. Frankly I'd expect one of those little fine wires to have come off rather than the chemistry to have gone AWOL.
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