Additional Components; Battery Charge Controller - Nortel T7406E Installation And Configuration Manual

30 Chapter 2 Introduction

Additional components

Along with this guide, the following items are included with the T7406E.
Figure 7 Handset components
Handset Handset charging
Figure 8 System parts
Mounting bracket
Base station and mounting bracket

Battery charge controller

The T7406E incorporates a special handset battery charge controller that uses a four-stage
charging program. The four-stage charging program sequences charging from a soft start to a fast
charge, and then to a topping charge, followed by a maintenance charge.
This four-stage charge sequence presents an optimum-charging plan that helps maximize the
overall life of the battery by managing two critical elements in the battery charging process: charge
rate and overcharging protection. NiMh batteries do not exhibit memory problems. You do not
need to drain the batteries before you recharge them.
Low battery status is indicated on the handset by the visual charge status on the display and the
audible warning tone. The battery icon appears in the upper right-hand corner of the handset
display. When the battery is low, the battery icon flashes. If the handset is in use and the battery is
low, the battery icon flashes and a warning tone beeps every 15 seconds. If the phone is in standby
mode, low battery status is not indicated.
NN40110-301 NN40110-301
Battery pack
cradle
AC adapter
AC adapter
External battery
charger
Upgrade bridge controller
Telephone cord
Belt clip
-
+
Upgrade ToPC