12 IBM WorkPad z50, Mobi le Companion 12
Checking Operational Charging:
There is no difference in
battery charging time whether th e system is fully operational
or not. To check the b attery charging, use a dis charged
battery pack or a battery pack that has less than 50% of total
power remaining.
Turn on the WorkPad z50 while the AC Ad apt er is c onn ect ed
to the system. The External Power/C harge Status LED will
change to amber while the battery is charging. When the
battery is fully charged (after about 1 – 2.5 hrs., depending
on the battery’s initial charge) the battery terminal voltage
should be around 12.6V dc. If the voltage is far less, or has
not increased from the initial vol t ag e, t h en rep eat the
procedure with another discharged battery pac k. If this
brings the same result, then suspect a mainboar d failure.
Optional Dry Cell Battery Checkout: If the optional Dry
Cell Kit (dry cell battery pack) has a problem, refer to the
following:
1. Enter suspend mode by pressing the Power butt on.
2. Remove the dry cell b attery pack and measu re the
voltage between the bat tery terminals. See th e
following figure:
1
7
Terminal Voltage (V dc)
1 8.8 – 12.8 V
7 Ground (-)
3. If the voltage is less t han 8.8 V dc, the dry c ell battery
pack has been discharg ed. Replace the dry c ells.
If the dry cell battery pack is extremely hot, it must be
replaced.