Kyocera m9300 Basic Manual page 28

Note: After use, make sure you move the slide switch to "DC
IN 5V" position to prevent battery drain.
It will take much longer to charge the device using the
battery charger as that is the trickle charge function. We
recommend to replace the original battery with a fully
charged battery when your primary battery becomes
discharged.
Extending Your Battery Life
Active applications, backlight levels, Bluetooth and
GPS use all contribute to draining your battery. The
following is a list of helpful tips that can help conserve
your battery's charge:
Reduce your backlight on time. See "Changing the
Backlight Time Length" on page 44.
Turn Bluetooth off when not in use. See "Turning
Bluetooth On and Off" on page 83.
Turn Wi-Fi off when not in use. See "Turning Wi-Fi On
and Off" on page 101.
Turn GPS off when not needed. Most applications
using this function will periodically query the GPS
satellites for your current location; each query drains
your battery. See "Location Settings" on page 45.
16 2A. Device Basics
Do not wait until your battery is completely depleted
before charging your device. Repeated complete
discharging and recharging can reduce the storage
capacity of any battery over time.
Turn off Automatic application sync. See
"Synchronizing Accounts" on page 46.
Add a Power Control Widget to your Home screen to
deactivate features such as Wi-Fi, Bluetooth, GPS,
and synchronization and to reduce the screen's
brightness setting.
Check running services and close any unnecessary
applications. See "To view and control currently
running services:" on page 54.