IBM L40 SX Quick Reference page 46

Warning: This blinking icon
battery urgently needs charging and that less than 3% of the full
power of the battery remains. The computer will enter Suspend
Mode in approximately 1 minute to preserve data. Do not leave the
computer in this condition for more than 1 hour as this can shorten
the life span of the battery. For more information, see page 30.
For Your Convenience
Usually, a complete charge makes it possible to use the battery for
up to 3 hours depending on applications and the configuration.
However, a fully-charged battery gradually loses its charge if not
used for a month or so. In this condition, the battery does not reach
full charge by charging it only once.
It is recommended that you obtain a spare rechargeable battery so
you can immediately replace the rechargeable battery with the low
charge and continue your work without delay. The low battery can
be replaced without losing data or saving an application. The low
battery can be recharged later when you are not operating the
computer. See "Charging the Rechargeable Battery" on page 39.
A spare rechargeable battery (part number 79F0197) can be
ordered from IBM or an IBM Authorized Dealer.
Removing the Rechargeable Battery
To remove the rechargeable battery, follow the instructions below.
Note: Do this operation 48 hours after you start using the computer
because it takes 48 hours to automatically charge the
standby battery that supplies power to the computer during
replacement of the rechargeable battery. The above is true
of the computer that you restarted using after a long period.
1
Close the display.
Operating Your Computer
indicates that the rechargeable
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