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Powerbook 540C Clock/sleep Battery???

Message #1 - Posted 2001/08/25 - mike

Thanks for the input.
The best I can find sez:

"Carefully unplug the wires from the spot it's plugged into. "

Since I don't have a battery, It ain't plugged into nowhere, so I
don't know where to plug it.
There may be an intermediated mezanine board between the main logic board
and the place to plug the battery. I don't have that either.
Need to talk to someone who has actually replaced the battery.

Thanks, mike

Cathy Stevenson wrote:

mike wrote:

I have what I think is a powerbook 540C. It's built into a kiosk, so I can't be exactly sure. Near as I can tell, the clock/sleep battery is a 6V external one
with a 3-pin connector
that plugs onto the logic board. I'd like to add the battery so the
clock will keep time. There's no obvious place to plug the battery on the
logic board. There are some multi-pin connectors, but I have no additional
boards, only the main board. (well, there's the display and backlight inverter)
Ideas on where to connect the clock/sleep battery?
Thanks, mike

take a look at:

There's a link from there to a PB battery info site. See also:


"there's a dance or two in the old dame yet"- mehitabel
cstevenson, M.D.

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