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How to chek phone without batery?

PostPosted: 2013 Sep 26, 11:52
by jonny
Hy all, how to chek phone without batery? I want to know is it working. If I identify voltage, to what contakts I should connect? I hope you will understud me :) (nokia 9000).

Re: How to chek phone without batery?

PostPosted: 2013 Sep 27, 09:46
by spectreman
Hi Jonny.
Do you have a multimeter ?
If so, just measure the resistance from each of the battery terminals on the phone to an earth point somewhere on the phone (one of the screws perhaps). The battery terminal that reads zero ohms to ground is obviously the negative terminal. Just need to know the battery voltage to apply an external power source, this should be mentioned in the handbook at least.
Cheers, Chris.

Re: How to chek phone without batery?

PostPosted: 2013 Sep 27, 11:16
by pena
Hello all,
I couldn't find any information about battery contacts, but battery (BLK-4S) voltage is 7,2 volts. It doesn't have to be exactly that, but around 7-7,5 volts probably will do.

Re: How to chek phone without batery?

PostPosted: 2013 Sep 27, 13:41
by jonny
spectreman wrote:Hi Jonny.
Do you have a multimeter ?
If so, just measure the resistance from each of the battery terminals on the phone to an earth point somewhere on the phone (one of the screws perhaps). The battery terminal that reads zero ohms to ground is obviously the negative terminal. Just need to know the battery voltage to apply an external power source, this should be mentioned in the handbook at least.
Cheers, Chris.

Thanks :)
But phone has 4 contacts: VBat+, GND, BSI, BTemp. Withput BTemp should turn on, but what I should have connected to the BSI?

Re: How to chek phone without batery?

PostPosted: 2013 Sep 27, 13:48
by jonny
pena wrote:Hello all,
I couldn't find any information about battery contacts, but battery (BLK-4S) voltage is 7,2 volts. It doesn't have to be exactly that, but around 7-7,5 volts probably will do.

Yes I think so too, but with connected only + and - phone will not turn on.

Re: How to chek phone without batery?

PostPosted: 2013 Sep 27, 15:05
by pena
Ground BSI (and maybe BTemp too) through a resistor, says these websites:
http://shaddack.twibright.com/projects/hw_nokiabat/ and http://www.cpkb.org/wiki/BSI

You could try to find a similar battery and wire it to the phone. If you're careful, maybe two BLC-2 batteries in series (to get 2 * 3,6v) and wire BSI&BTemp to one of them...?

Re: How to chek phone without batery?

PostPosted: 2013 Sep 27, 17:47
by jonny
pena wrote:Ground BSI (and maybe BTemp too) through a resistor, says these websites:
http://shaddack.twibright.com/projects/hw_nokiabat/ and http://www.cpkb.org/wiki/BSI

You could try to find a similar battery and wire it to the phone. If you're careful, maybe two BLC-2 batteries in series (to get 2 * 3,6v) and wire BSI&BTemp to one of them...?

Thank You :)

Re: How to chek phone without batery?

PostPosted: 2013 Sep 28, 12:10
by jonny
My Nokia 9000 is a life :) Enough to connect + and -, and this phone is turning on.

Re: How to chek phone without batery?

PostPosted: 2013 Sep 28, 22:25
by pena
Good to hear that you got it working! 8-)

Re: How to chek phone without batery?

PostPosted: 2013 Nov 26, 09:12
by khalif
The other contacts are used for charging info, ie the resistance value denotes the cell type and voltage and the remaining contact is an over temperature thermistor which will cause charging to stop. To run the phone only + and - need to be connected.