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Step 2 Install the Optional Battery and Battery Clip,
Charging the Battery Pack
ONLY use Acer battery part number BAT-LIION-3.6-01.
The optional battery pack is shipped uncharged. The ARMC card automatically starts to
charge the battery after you install it. You must charge the battery pack before it can be
used to provide backup power to the ARMC card. The minimum time that the battery
must be charged is:
Acer Part Number
Description
BAT-LIION-3.6-01
Battery, Li-Ion, 3.6 V, 855/900 mAh on-board
battery pack with mounting brackets
Note:
Li-Ion has no memory effect. Lithium-ion cells offer extended cycle life when cycled at
low depth of discharge. Li-Ion batteries are specified to operate between –208C to +608C
for discharge and 08C to +408C for charge.
Storage
If you keep a stock of extra ARMC batteries, store them at room temperature.
Note:
The recoverable capacity of cells stored for over one year at room temperature and fully
charged is 94%. The retained capacity of these same cells is 87%. This means the self-
discharge rate for a fully charged cell is approximately 150 mAh per year or 427 uAh per
day. The self-discharge rate for cells is non-linear. A partially charged cell has a self-
discharge rate of about 80 uAh per day.
Changing the Battery Pack
The optional ARMC battery pack must be replaced every 400 cycles. Cells retain 80% of
their original capacity after 400 cycles. A cycle is defined as a full charge (4.2V)
followed by a full discharge (2.8V). Keep in mind that cycling or storing the cells at
elevated temperatures can reduce the cell capacity and cycle life. Cells discharged and
stored at low temperatures can extend the shelf life of the batteries.
Step
Action
1
Bring down the operating system properly. Turn the computer power off. Remove the computer cover.
Remove the ARMC card.
2
Disconnect the battery pack cable or harness from the J1 jumper on the ARMC card.
3
Install a new battery pack and connect the new battery pack to the J1 jumper.
4
Reinstall the ARMC card into the host system.
WARNING!
Risk of explosion if battery type used is incorrect.
Continued
Weight
Time to Charge
33 g
six hours
Chapter Two : Installing Your ARMC Card
Cont'd
7
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