Author Topic: I also found...  (Read 1645 times)

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Offline galannthegreatTopic starter

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I also found...
« on: May 20, 2009, 08:52:53 PM »
I also found some old Nokia 5120's for $0.75 a piece and I found a link that could give some people who may want to know this some help.

http://serdisplib.sourceforge.net/ser/pcd8544.html

I also got a hold a bunch of Li-ion batteries... but I have a few question on using these batteries. There is 4 connections on the batteries, obviously 2 are labeled "V-" and "V+", but there are 2 others labeled "ID" and "T", and I have no idea what they may mean. Any help here?
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Offline SmAsH

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Re: I also found...
« Reply #1 on: May 21, 2009, 12:21:37 AM »
this is a guess, but don't most lipo batteries have built in protection circuits?
t may be a temp monitor?
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Offline galannthegreatTopic starter

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Re: I also found...
« Reply #2 on: May 21, 2009, 10:03:39 AM »
That would make sense. So then pretty much for charging it's positve to positive on the charger, and same for the negative? And I still have one labeled "ID", could it be a bsttery level detection circuit?
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Offline SmAsH

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Re: I also found...
« Reply #3 on: May 21, 2009, 02:42:22 PM »
yes, you may be right... but cant a battery level be know via the voltage lines?
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Offline galannthegreatTopic starter

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Re: I also found...
« Reply #4 on: May 21, 2009, 02:49:24 PM »
Well I have a booklet from Microchip that gives a simple circuit to connect to an MCU to show battery levels, but it takes up extra space. So I may have to do some investigating now, get some tools, and open one up to get a schematic made up of the circuit. Thanks for the intuitive ideas SmAsH. :)
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