Xltek® Trex HD Amplifier
User & Service Manual
54
13.5. External Power Pack and Charging Details
The Li-Ion battery provides approximately 500 charge/discharge cycles over the course of a two-year
expected life. The life of the power pack will be significantly reduced if exposed to excessively high/low
temperatures.
Do not charge a power pack that is below 32ºF (0ºC). Allow battery pack to warm to room temperature
first.
Optimal power pack charging temperature is 68ºF to 77ºF (20ºC to 25ºC). Charging temperatures
out of this range will reduce power pack life cycle and capacity.
New power packs, or power packs that have been in storage for an extended period of time,
should go through a charge-discharge-charge cycle prior to use, to calibrate the gas gauge.
Operational time will be reduced when operated at environmental temperature extremes, and due
to naturally occurring aging of the power pack.
13.5.1. External Power Pack LED Indicators
The percentage of remaining capacity of the power pack can be seen on the end of the unit while
connected to the Trex HD. The number of LEDs illuminated indicates power pack capacity.
If the power pack is being charged, the state of the charge will be indicated by the same four (4) LEDs.
Battery Status
Indicator Status
75~100%
Four lights
50~75%
Three lights
25~50%
Two lights
1~25%
One light
0%
No light
Charging In Progress
Amber charging light
Charging Complete
Green charging light
If the power pack is not connected to the Trex HD unit, the power pack charge status can be viewed by
pressing the Refresh Push Button.
NOTE:
To preserve battery life, the LED status lights are designed to turn off while powering
the Trex HD and during storage. The indicators may be reactivated by pressing the Refresh
Push Button.
NOTE:
The external battery pack consumes a small charge while idle or in storage
.
It is
recommended that the battery pack be used within 24 hours after it is charged to full capacity.
A longer storage or idle time may reduce the battery life during operation.