Operation Manual

Installing the Battery

Note: Ensure that the correct battery is used with the ET1. On the ET1N0 use either the 4620 mAh battery,

p/n 82-149690-xx or the 5640 mAh battery, p/n 82-158261-xx. On the ET1N2 use only the 5640 mAh

battery, p/n 82-158261-xx.

To install the battery:

Procedure:

1 Align the tracks on the side of the battery with the rails in the battery compartment.

2 Push the battery in until the battery release latch snaps into place.

3 If the battery is charged, press and hold the Power button for two seconds until the splash screen appears.

Figure 4: Inserting the Battery

1 Rails

2 Battery Tracks

Charging the Battery

Caution: Ensure that you follow the guidelines for battery safety described in Battery Safety Guidelines on

page 87.

Charging the Main Battery

Before using the ET1 for the first time, charge the main battery until the Battery Charge light emitting diode (LED)

turns solid green (see Table 2: Battery Charge LED Status on page 20 for charge status indications). To charge the

ET1, use a cable or a cradle with the appropriate power supply. For information about the accessories available for the

ET1, see Accessories on page 79.

The ET1 is equipped with a memory backup battery that automatically charges from the fully-charged main battery.

When using the ET1 for the first time, the backup battery requires approximately 40 hours to fully charge. This is also

true any time the backup battery is discharged, which occurs when the main battery is removed for several hours. The

backup battery retains random access memory (RAM) data in memory for at least 15 minutes (at room temperature)

Getting Started | 19

MN000022A02-A | February 2015