Toshiba Satellite L750 laptop computer has different types of batteries.
Toshiba pa3534u-1bas battery pack
When the AC adaptor is not connected, the computer’s main power source
is a removable lithium ion battery pack, also referred to in this manual as
the main battery. You can purchase additional Toshiba PA3817U-1BRS battery packs for extended
use of the computer away from an AC power source although you should
not change the battery pack while the AC adaptor is connected.
Before you remove the battery pack, save your data and shut down the
computer, or place the computer into Hibernation Mode. Please be aware
that, when placing the computer into Hibernation Mode, the contents of
memory will be saved to the hard disk drive, although for safety sake, it is
best to also save your data manually.
Make sure the Toshiba notebook battery is securely installed in the computer before
attempting to charge the battery pack. Improper installation could
generate smoke or fire, or cause the battery pack to rupture.
■ Keep the laptop computer battery pack out of reach of infants and children. It can be cause
injury.
Real Time Clock (RTC) Battery
The Real Time Clock (RTC) battery provides power for the internal real
time clock and calendar function and also maintains the system
configuration while the computer is turned off. If the RTC battery becomes
completely discharged, the system will lose this information and the real
time clock and calendar will stop working .