Toshiba P300 charging pins polarity, battery not detected

pne1234 · Dec 2, 2013

hi there i am new to this forum so forgive me if this is in the wrong category.

i have a Toshiba L300 and have just purchased a new battery as the previous one was not recognised, the new one also is not recognised by the laptop. i am able to boot up straight from the AC charger without the battery. this makes me think the charging pins are faulty on the motherboard. is there a way of finding the polarity of the pins to test with a multimeter as i cant find the schematics for them anywhere or is there a way of finding them.

thanks

makkem · Dec 2, 2013

Hi
Since you have a multimeter just set it to DC voltage and put the probes on the pins,you will not damage the meter or laptop.

pne1234 · Dec 2, 2013

which pins do i put the probes on, there are 9 pins altogether

makkem · Dec 3, 2013

Hi
Without seeing a schematic its not possible to tell,however if you can see some of the metal internal chassis then put the black probe to that then move the red probe along the contacts one at a time.
If you cannot see any metalwork then you will have to systematically try the probes on all the contacts.
You should also try the probes on the battery contacts this will tell you the approximate voltage you should be getting on the laptop contacts.

pne1234 · Dec 3, 2013

makkem :

there seems to be little or no voltage coming out of the pins, this either points to the charging pins being faulty or if a fuse or capacitor has blown, either way thanks for helping me.

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Toshiba P300 charging pins polarity, battery not detected

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