IBM ThinkPad R40 2681 User Manual

2
3
4
5(-)
1(+)
Terminal Voltage (V dc)
1 + 0 to + 16.8
5 Ground (−)
3. If the voltage is less than +14.4 V dc, the battery pack
has been discharged.
Note: Recharging will take at least 3 hours, even if the
indicator does not turn on.
If the voltage is still less than +14.4 V dc after
recharging, replace the battery.
4. If the voltage is more than +14.4 V dc, measure the
resistance between battery terminals 4 and 5. The
resistance must be 4 to 30 K .
If the resistance is not correct, replace the battery
pack. If the resistance is correct, replace the system
board.
For
machine type 2684, 2685
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:
2
3
4
5(-)
1(+)
Terminal Voltage (V dc)
1 + 0 to + 12.6
5 Ground (−)
3. If the voltage is less than +11.0 V dc, the battery pack
has been discharged.
Note: Recharging will take at least 3 hours, even if the
indicator does not turn on.
If the voltage is still less than +11.0 V dc after
recharging, replace the battery.
4. If the voltage is more than +11.0 V dc, measure the
resistance between battery terminals 4 and 5. The
resistance must be 4 to 30 K .
Checkout guide
General descriptions 41

IBM ThinkPad R40 2681 Specifications

General

Brand	IBM
Model	ThinkPad R40 2681
Category	Laptop
Language	English