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CMS 50D Plus Oximeter - How long do batteries last?
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diamaunt Offline

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Post: #11
RE: CMS 50D Plus Oximeter - How long do batteries last?
it's easy to tell when it's on and recording, and when it's off.

on and recording, display blank, sensor led steady red.

off... display blank, sensor led off.
07-10-2014 04:02 PM
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jcarerra Offline

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Post: #12
RE: CMS 50D Plus Oximeter - How long do batteries last?
(07-10-2014 04:02 PM)diamaunt Wrote:  it's easy to tell when it's on and recording, and when it's off.
on and recording, display blank, sensor led steady red.
off... display blank, sensor led off.
But there is a recording blinking light that is on sometimes? (all the time when recording?) so display is not blank. Confused.

And I do not know what is causing it to go into the non-recording, completely off state after I go to sleep with it recording.

So maybe here is another question...
how many states can it be in..

a. Off
b. On, finger out, recording, display on, record light blinking
c. On, finger out, recording, display off, but record light blinking
d. On, finger out, not recording, display on
e. On, finger out, not recording, display off
f. On, finger in, recording, display on, record light blinking
g. On, finger in, recording, display off, but record light blinking
h. On, finger in, not recording, display on
i. On, finger in, not recording, display off
j. On, menu on screen

Any others? Sensor LED needs to be in there.
(This post was last modified: 07-10-2014 04:38 PM by jcarerra.)
07-10-2014 04:36 PM
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diamaunt Offline

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Post: #13
RE: CMS 50D Plus Oximeter - How long do batteries last?
oy vey.

you act like you've never even used the thing.

is the low battery icon blinking? that signals your battery is low.
07-10-2014 05:24 PM
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jcarerra Offline

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Post: #14
RE: CMS 50D Plus Oximeter - How long do batteries last?
Have used it about 5-6 days. All of these questions are because it is just one of the most obstinate devices i have ever encountered.

I just put in "new as of yesterday" rechargeable batteries, fully charged, checked with voltmeter (1.32v no load), and put it on record. When I came back about 2.5 hours later, it was showing low batt. This is with finger out so sensor is not full on (I do see a flashing light inside as it is sensing whether a finger is there or not).

I am just totally frustrated with trying to get data, and constantly failing.

The first original try was with fresh alkaline batts. Got no data first night; got data second night; got nothing 3rd night--it was off with low batt 3rd morning.

ADDED
just measured the batts that were causing the low batt indication after just 2-3 hours...1.30v on each.
(This post was last modified: 07-10-2014 07:00 PM by jcarerra.)
07-10-2014 06:47 PM
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diamaunt Offline

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Post: #15
RE: CMS 50D Plus Oximeter - How long do batteries last?
normal alkalines are 1.55ish.

why don't you WEAR the thing and see how long it takes, instead of testing in an abnormal usage case?
07-10-2014 08:01 PM
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jcarerra Offline

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Post: #16
RE: CMS 50D Plus Oximeter - How long do batteries last?
(07-10-2014 08:01 PM)diamaunt Wrote:  normal alkalines are 1.55ish.

why don't you WEAR the thing and see how long it takes, instead of testing in an abnormal usage case?
Read previous. I -have- worn it about 6 nights. Got data one night. That is the reason for this experimentation...which seems to have born some fruit to learn that the rechargables only last 3 hours even though sensor LED not on full time and still at 1.3v when showing low batt.

Since the alkalines ran out during the 3rd night, I don't quite know where to go with this. I don't really want to consume 2 batts per two days, but that is consistent with you saying about 24 hours recording time on alkalines--some of my nights are longer than 8 hours, so I would not get 3 full nights of data, and the low batt on third night makes sense--though disappointing.

I know I read somewhere on here that someone was using rechargables, but mine appear to be inadequate. $9 wasted.
(This post was last modified: 07-10-2014 08:22 PM by jcarerra.)
07-10-2014 08:17 PM
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Peter_C Offline

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Post: #17
RE: CMS 50D Plus Oximeter - How long do batteries last?
FYI? Just because you bought a new device, doesn't always mean it is a *good* (or non-defective) device?

Perhaps it is simply a defective unit?

*I* am not a DOCTOR or any type of Health Care Professional. My thoughts/suggestions/ideas are strictly only my opinions.

"Only two defining forces have ever offered to die for you. Jesus Christ and the American Soldier. One died for your Soul, the other for your Freedom."
07-11-2014 12:09 AM
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diamaunt Offline

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Post: #18
RE: CMS 50D Plus Oximeter - How long do batteries last?
I can heartily recommend the CMS50I, 90$ from aliexpress, rechargable, holds multiple sessions, timestamped, wrist mounted.
07-11-2014 01:43 AM
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jcarerra Offline

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Post: #19
RE: CMS 50D Plus Oximeter - How long do batteries last?
(07-11-2014 01:43 AM)diamaunt Wrote:  I can heartily recommend the CMS50I, 90$ from aliexpress, rechargable, holds multiple sessions, timestamped, wrist mounted.

Do you know the difference in the 50I and the 50F which I have also seen recommended here?
07-11-2014 07:55 AM
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diamaunt Offline

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Post: #20
RE: CMS 50D Plus Oximeter - How long do batteries last?
(07-11-2014 07:55 AM)jcarerra Wrote:  
(07-11-2014 01:43 AM)diamaunt Wrote:  I can heartily recommend the CMS50I, 90$ from aliexpress, rechargable, holds multiple sessions, timestamped, wrist mounted.

Do you know the difference in the 50I and the 50F which I have also seen recommended here?

holds multiple sessions, timestamped,
07-11-2014 10:41 AM
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