Texas Instruments TI-84 Plus CE Getting Started page 64

Deep Sleep Mode
To maximize battery life, this graphing calculator is shipped in Deep
Sleep mode. To wake the handheld from this mode, press É for at least
4 seconds or apply USB (computer or wall adapter) or TI Charging
Station CE power. After waking the handheld, you can turn it on anytime
by pressing É. To maximize battery life during extended storage
periods, the Deep Sleep mode is enabled automatically after a period of
being in the off state.
Recharging the TI Rechargeable Battery
You should make sure the TI-84 Plus CE battery is charged for classroom use
and before exams.
Use one of the following options to charge the battery in the TI-84 Plus CE
graphing calculator:
• Connect the graphing calculator to a computer using a USB computer
cable.
-or-
• Connect to a wall outlet using a TI wall adapter (may be sold separately).
-or-
• Place the graphing calculator in a TI Charging Station CE.
The amount of time required to fully charge the battery may vary, but charging
takes about four hours. It is not necessary to remove the TI Rechargeable
Battery from the graphing calculator to recharge it. The graphing calculator
operates normally while it is attached to a charging source.
To recharge a graphing calculator from a computer, a TI USB driver must be
installed. To download TI Connect™ CE or TI-SmartView™ CE software that
includes a driver, go to: education.ti.com/go/download.
60 Using Accessories