Checking the Battery Pack (2640-560x - 60x, 70x)
Checking the Battery Pack
Battery charging will not start until the Fuel-Gauge shows that
less than 95% of the total power remains,
with this condition the battery pack will charge to 100% of its
This protects the battery pack from being
over-charged or having a shortened life.
Do the following:
- Power-off the computer.
- Remove the battery pack and measure the voltage between battery
terminals 1 (+) and 4 (-).
See the following figure.
- If the voltage is less than +11.0 Vdc, the battery pack has
been discharged. Recharge the battery.
In this case, the battery pack is over-discharged. It takes at least 2 hours
to recharge the battery pack even if the indicator does not turn on.
If the voltage is still less than +11 Vdc after recharging, replace the battery.
- If the voltage is more than +11.0 Vdc,
measure the resistance between
battery terminals 3 and 4.
The resistance must be 4K ohms to 30K ohms.
If the resistance is not correct, replace the battery pack.
If the resistance is correct, replace the DC/DC card.
If the problem persists, replace the system board.
Please see the LEGAL - Trademark notice.
Feel free - send a for any BUG on this page found - Thank you.