Probook 4510 - Schematics+Charging Pins

[BigAlNZ]

Hi All,

Got a probook 4510 that keeps killing batteries every few weeks, such that the battery looks good in all respects but wont discharge.

Firstly I think i need the schematics.

Secondly does anyone know what the correct voltages are for the battery charging pins on the motherboard? There is 6 pins. I get 3.3 volts on all but the left pin (GND) and right pin (1.98v).

Am happy 3.3v is ok, not sure if the 1.98v is correct?

Cheers

-Al

[BigAlNZ]

Re: Probook 4510 - Schematics+Charging Pins

Attached for anyone else that needs it

[Toasty]

Re: Probook 4510 - Schematics+Charging Pins

Battery is 10.8v, so 3.3v is way low. Page 6 shows the connector I think you're talking about (right-upper, CN1014), and Pin 1 looks to be charge/output, Pin 6 is Ground, and the ones in between look like battery "sense" for the charging circuit.

Is there a battery "test" in the BIOS? May reset the battery charging circuit. **
How's the adapter output? What is its voltage when the unit is running and charging? If it's falling off/low, I'd say that's the problem.

Toast

[ See Page 5, upper left, just below and left of DC JACK, it says BATCAL#. Seems to indicate "Battery Calibration" to me. I've seen that in a few laptops before. ]

[Toasty]

Re: Probook 4510 - Schematics+Charging Pins

Any findings?

[the-sky-blue]

Re: Probook 4510 - Schematics+Charging Pins

thanks a lot