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quanttrom is offline quanttrom
2013-12-29 , 16:06
Posts: 50 | Thanked: 36 times | Joined on Aug 2010
#1
I was doing some experimentation with wireless charging on the N900 and I noticed the back-up battery in the phone. This battery is designed to keep the RTC(real-time clock) running when the main battery is unplugged. My phone is quite old by now so I am pretty sure it is gone and the RTC is lost every time I swap out the main battery.

Based on my research it is most likely a rechargeable Lithium Iron Phosphate battery with nominal voltage of 3.2V but I may be completely off.

I searched on DigiKey but I can't seem to find any coincell battery that is even similar to that size.

Can someone shed some light on this?
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pichlo is offline pichlo
2013-12-29 , 16:15
Posts: 6,453 | Thanked: 20,983 times | Joined on Sep 2012 @ UK
#2
http://talk.maemo.org/showthread.php?t=90864

If joerg_rw's run out then I have one spare. I have three and only two phones to replace them in. Replacing was easy in one, just need to get around to doing the rest.
Last edited by pichlo; 2013-12-29 at 17:23. Reason: Missed a word. D'oh!
 

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quanttrom is offline quanttrom
2013-12-29 , 19:10
Posts: 50 | Thanked: 36 times | Joined on Aug 2010
#3
sweet ! thanks ! I'll hit him up and see if he has any extra ones !

If not, DigiKey has some in stock and I have an order coming up so I might tack it on !
 
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