Sharp Mobilon HC-4000 Operation Manual page 29

Discharging the Main Battery (For HC-4500 users)
In order to maintain the optimum performance of the main battery, we recommend
you to recharge the battery after the display of the message saying that you should
replace the main battery. Since repeatedly recharging the battery except the above
condition will reduce the battery's capacity, discharge the main battery once a
month by the following steps to maintain the optimum performance.
1. Save the editing data and close all applications.
2. Disconnect the AC Adaptor, if it's connected.
3. In control Panel, double-tap the Discharge icon.
4. If running applications still exist, close them then tap Yes.
5. Tap Discharge to start discharging.
6. When the discharge process will be completed, a message will appear.
Note:
The discharge process will normally takes 1-3 hours.
Backlight automatically becomes the brightest while discharging.
Do not use any application or communication function while discharging.
If you want to stop discharging, tap OK to close the alert box then tap
Cancel in the Discharge Utility window.
If you discontinue Discharge Utility and recharge the battery, the
performance of the battery will not be recovered.
If the time of continuous operation is shortened even after discharge/charge
cycle is performed, purchase a new battery.
About power source
You can use two AA (LR6) alkaline batteries or the optional Ni-MH Rechargeable
Battery Pack to power your unit, or the AC adaptor included in the optional
Docking Station Kit. (HC-4000/HC-4100)
If the main batteries are not installed, or are depleted, the unit will not function
even when connected to an AC power source.
Caution: When the main batteries are depleted, replace them promptly with new
batteries. (or recharge them : HC-4500) If the depleted main batteries are not
replaced, (or recharged : HC-4500), the backup battery will be drained more
quickly than normal. (See Battery life in "Hardware specifications")
The unit will turn off if you ignore the low battery warning and continure the
work. It will also turn off if you slide the battery replacement switch away from
the NORMAL OPERATION position while the unit is operating. If this happens,
the data being edited and other information may be lost, and the alarm may not
function correctly.
The AC adaptor may hum when it is used. This is normal. (HC-4500)
After charging or use of the battery, its back may become warm. This is normal,
and does not indicate any problem. (HC-4500)
27