Psion EP10 User Manual download pdf (Page 56)

Chapter 3: Getting to Know the EP10

Monitoring the Battery and Maximizing Run Time

Psion EP10 Hand-Held Computer User Manual

3.7 Monitoring the Battery and Maximizing Run Time

As Lithium-Ion batteries age, their capacity decreases gradually, and they are generally considered de-

pleted after approximately 2 years of use (less than 60% of original capacity remaining). Keep in mind

however that heavy usage or operating the EP10 at temperature extremes will shorten the battery life.

Lithium-Ion batteries do not require conditioning cycles and the EP10 battery system (including chargers)

requires no user interaction to maintain peak performance.

To maximize the run time of your batteries, consider the following:

• The display backlight is a large drain on the battery. Try to keep its brightness as low as possible.

• The EP10 is ‘event’ driven – that is, when it is not in use, the EP10 reverts to sleep mode (even when it

appears to be running), saving battery power. Events include a key press, touchscreen taps and scan

triggers. Power consumption is reduced if you avoid unnecessary events, and allow the EP10 to sleep

as much as possible.

• The battery is a ‘smart battery’ with built-in intelligence.

Tapping on the Start>Settings>Power icon displays a dialog box that provides detailed information about

the battery status of the battery installed in your EP10.

• When the EP10 is switched off, it goes into a low-power, suspend state but continues to draw a small

amount of power from the battery. This should not be an issue unless the EP10 is left in suspend state

for more than a week – for long-term storage, the battery should be removed.

3.7.1 Storing Batteries

Long term battery storage is not recommended. If storage is necessary:

• Always try to use a ‘first-in first-out’ approach to minimize storage time.

• Lithium-Ion batteries age much faster at elevated temperatures. Store batteries at temperatures

between 0° C and 20° C.

• Always charge batteries to at least 40 to 60% before storing them. Batteries can be damaged by an

over-discharge phenomenon that occurs when an empty battery is stored for a long period of time

such that the cell voltage drops below a lower limit.

• To minimize storage degradation, recharge stored batteries to 40 to 60% every 4 or 6 months to

prevent over-discharge damage.

• A ‘never used’ Lithium-Ion battery that has been stored for 3 years may have limited or no useful life

remaining once put into service. Think of batteries as perishable goods.

3.8 Uploading Data in a Docking Station

The desktop docking station and quad docking station are typically used to upload transaction data to a

server computer when a radio link is not available.

The desktop docking station can complete batch uploads to a Client USB connected PC or server.

Unlike the desktop docking station, the quad docking station supports only TCP/IP connections to a PC or

server through a 10/100baseT Ethernet connection.

When an EP10 is inserted in a docking station, a dock icon is displayed in the navigation bar at the top of the

screen. The EP10 also detects the presence of the Ethernet network.

Note: When the battery is at 50% capacity, a ‘low battery’ warning is displayed. When the battery is

at about 10% capacity, a ‘very low battery’ notification bubble appears.

Important: Review the documentation provided with the user application installed in your

EP10 before performing data uploads.

Note: Refer to “Chargers and Docking Stations” on page 182 for more details.

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Psion EP10 User Manual Page 56

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