General Dynamics Itronix GD8200 User Manual page 37

GD8200 User Guide
Tip 3. Calibrate your battery
Over time the accuracy of the Windows
may be affected by repeated charging and discharging of the
battery. Calibrating the battery every 3 or 4 months helps to
keep the gas gauge accurate. Refer to
more information.
Tip 4. Get a good charge
Your computer will charge more quickly if it is turned off or
„
suspended.
In warmer or cooler temperatures the battery can take much
„
longer to fully charge.
If your battery is charged in a cold (less than 41°F/5°C) or very
„
warm (greater than 122°F/50°C) environment, it is possible that
Battery Power Indicator
the
has stopped; however, this does not necessarily mean that your
battery is fully charged.
Tip 5. Prevent data loss
Follow these guidelines to prevent data loss when removing
your battery or storing your computer:
You will lose data if you remove the battery while the computer
„
is operating or suspended and AC power is disconnected. To
prevent this, shutdown your computer or put it into hibernate
(suspend-to-disk) mode before removing your battery.
If you plan to store your computer for more than a few days,
„
shutdown your computer or put it into hibernate mode.
Remove the battery before storing the computer.
Tip 6. Clean terminals
Dirty terminals can be a cause of charging problems. Clean
battery terminals with a cotton swab dipped in isopropyl
alcohol. Make sure that the alcohol has evaporated before
reinstalling the battery.
Tip 7. Storing batteries
Stored Lithium-Ion battery packs gradually deteriorate,
particularly if they are not stored in ideal conditions, and their
life expectancy decreases. When storing Lithium-Ion battery
packs for extended periods, consider these recommendations:
When storing batteries for extended periods store them between
„
3°C to 7°C (38°F to 45°F) to slow self-discharge and battery aging.
If you store batteries at normal ambient temperatures, use the
following charging policy to maintain battery pack condition:
ƒ ƒ
Charge installed batteries every 21 days to maintain their charge
capacity.
ƒ ƒ Charge uninstalled batteries every 6 months.
Unused or stored batteries can lose power over time. When you
„
install a battery that has not been used recently, connect external
power to the computer and fully charge your battery.
General Dynamics Itronix 72-0146-001
battery gas gauge
®
Battery Calibration for
will indicate that the charge
Operating with Battery Power
Fully charged Lithium-Ion batteries deteriorate faster than partly
„
discharged ones. For ideal storage, charge the battery to 100%
and then discharge them to 50% charge before storing.
Do not allow stored Lithium-Ion batteries to discharge
„
completely, as this may permanently damage them. Stored
batteries should be recharged to 50% capacity every six months.