Contec CMS-50E and EW REPLACEMENT BATTERY

[torontoCPAPguy]

I have THREE Contect CMS-50E pulse oximeters, the third one being wireless (CMS-50EW) and the software that goes with them. They have all served me very well and actually continue to do so excepting that the displays have gone dark and almost unreadable even in a darkened room.

I believe I need to replace the batteries in these units unless someone has any other suggestions as to why the displays have gone dark.

Does anyone know where I can pick up three lithium batteries 3.6-4.2VDC, 470mAh, marked JG21? These fingertip pulse oximeters are a god-send and I would heartily recomment the CONTEC CMS-50EW to anyone needing an accurate and reliable pulse oximeter. I have taken them to the hospital with me when I am in and compared to the hospital pulse oximeters these CONTEC units are dead accurate.

As of late, we changed our diet to vegetarian and CAUTION!!... make sure you are getting sufficient IRON/B12 etc. I have been short of breath for two weeks now and am sleeping with my Respironics oxygen concentrator cranked full on and pushed into the air flow from my S9 CPAP machine. Without all, I cannot get decent sleep. The concentrators are Everflow Q and they put out 5L/M. Am thinking I should have an Everflow Q 10L/M unit these days. These Everflow Q units are dead quiet and do the job...they were a bargoon at about $600 each delivered. But my issue for now is the pulse oximeter. If anyone can help I would be grateful... I need some advice and replacement batteries fast! Thanks in advance.

[Goofproof]

I too have the same trouble with my 50E, But I question if the battery is the fault. If the charge power is on it doesn't effect the dark screen, I'd hate to throw batteries at it and have to junk it. Jim

[Goofproof]

I too have the same trouble with my 50E, But I question if the battery is the fault. If the charge power is on it doesn't effect the dark screen, I'd hate to throw batteries at it and have to junk it. Jim

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could they have programmed it to self destruct after 3 years?

the manuals do mention a 3 year limit which i thought was the life of the nonreplacable battery

Thought you said their manuals were crap, I never saw that, and why would the battery not be replacable when they have a screw cover built-in. Me thinks you know not of what you speak. Jim