Lenovo ThinkPad X60s Hardware Maintenance Manual - Page 37

Checking, operational, charging, battery - battery life

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Checkout guide 1. Unplug the ac adapter cable from the computer. 2. Measure the output voltage at the plug of the ac adapter cable. See the following figure: Pin Voltage (V dc) 1 Ground 1 2 2 +19.5 to +21.0 3. If the voltage is not correct, replace the ac adapter. 4. If the voltage is acceptable, do the following: v Replace the system board. v If the problem persists, go to "Product overview" on page 34. Note: Noise from the ac adapter does not always indicate a defect. Checking operational charging To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer. Perform operational charging. If the battery status indicator or icon does not turn on, remove the battery pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icon still does not turn on, replace the battery pack. If the charge indicator still does not turn on, replace the system board. Then reinstall the battery pack. If it is still not charged, go to the next section. Checking the battery pack Battery charging does not start until the Power Meter shows that less than 95% of the total power remains; under this condition the battery pack can charge to 100% of its capacity. This protects the battery pack from being overcharged or from having a shortened life. To check the status of your battery, move your cursor to the Power Meter icon in the icon tray of the Windows taskbar and wait for a moment (but do not click), and the percentage of battery power remaining is displayed. To get detailed information about the battery, double-click the Power Meter icon. Note: If the battery pack becomes hot, it may not be able to charge. Remove it from the computer and leave it at room temperature for a while. After it cools down, reinstall and recharge it. To check the battery pack, do the following: 1. Power off the computer. 2. Remove the battery pack and measure the voltage between battery terminals 1 (+) and 5 (−). See the following figure: General descriptions 31

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1.
Unplug
the
ac
adapter
cable
from
the
computer.
2.
Measure
the
output
voltage
at
the
plug
of
the
ac
adapter
cable.
See
the
following
figure:
1
2
Pin
Voltage
(V
dc)
1
Ground
2
+19.5
to
+21.0
3.
If
the
voltage
is
not
correct,
replace
the
ac
adapter.
4.
If
the
voltage
is
acceptable,
do
the
following:
v
Replace
the
system
board.
v
If
the
problem
persists,
go
to
“Product
overview”
on
page
34.
Note:
Noise
from
the
ac
adapter
does
not
always
indicate
a
defect.
Checking
operational
charging
To
check
whether
the
battery
charges
properly
during
operation,
use
a
discharged
battery
pack
or
a
battery
pack
that
has
less
than
50%
of
the
total
power
remaining
when
installed
in
the
computer.
Perform
operational
charging.
If
the
battery
status
indicator
or
icon
does
not
turn
on,
remove
the
battery
pack
and
let
it
return
to
room
temperature.
Reinstall
the
battery
pack.
If
the
charge
indicator
or
icon
still
does
not
turn
on,
replace
the
battery
pack.
If
the
charge
indicator
still
does
not
turn
on,
replace
the
system
board.
Then
reinstall
the
battery
pack.
If
it
is
still
not
charged,
go
to
the
next
section.
Checking
the
battery
pack
Battery
charging
does
not
start
until
the
Power
Meter
shows
that
less
than
95%
of
the
total
power
remains;
under
this
condition
the
battery
pack
can
charge
to
100%
of
its
capacity.
This
protects
the
battery
pack
from
being
overcharged
or
from
having
a
shortened
life.
To
check
the
status
of
your
battery,
move
your
cursor
to
the
Power
Meter
icon
in
the
icon
tray
of
the
Windows
taskbar
and
wait
for
a
moment
(but
do
not
click),
and
the
percentage
of
battery
power
remaining
is
displayed.
To
get
detailed
information
about
the
battery,
double-click
the
Power
Meter
icon.
Note:
If
the
battery
pack
becomes
hot,
it
may
not
be
able
to
charge.
Remove
it
from
the
computer
and
leave
it
at
room
temperature
for
a
while.
After
it
cools
down,
reinstall
and
recharge
it.
To
check
the
battery
pack,
do
the
following:
1.
Power
off
the
computer.
2.
Remove
the
battery
pack
and
measure
the
voltage
between
battery
terminals
1
(+)
and
5
(±).
See
the
following
figure:
Checkout
guide
General
descriptions
31