Psion Teklogix 7525 Charge Indicators-The LEDs, Troubleshooting, Excessive Charge Duration

Chapter 9: Peripheral Devices & Accessories

Battery Charge Duration

9.6.2 Battery Charge Duration

A fully discharged battery can take up to 4 hours to charge. The quad battery charger stops applying power to the battery when it is fully charged–there is no risk of overcharge if the battery remains in the charge well. The 75% charge indicator is handy if you need a quick recharge–a quick charge often takes less than one hour.

9.6.3 Charge Indicators–The LEDs

Each battery charge well is equipped with an LED to indicate the charge status of the battery. When a battery is inserted in the charger, the colour and behaviour of the LED associated with the charge well in use indicates the status of the charge. Refer to Table 9.3 on page 290 for details.

9.6.4 Troubleshooting

9.6.4.1Excessive Charge Duration

The charger is equipped with a recalibration function–a function that fully discharges and then fully recharges the battery. This process is necessary to recalibrate the battery capacity gauge internal to the battery. The charger attempts recalibration when:

•the battery capacity is at less than 30%, and

•the battery has undergone more than 40 partial charge cycles since the last full discharge.

The recalibration function extends the charge time by up to 2 hours.

9.6.4.2Indicator Flashing Red

If the indicator flashes red:

•Remove all batteries and disconnect the mains power cable.

•Wait at least 20 seconds, and then plug the cable in again.

If any of the charge well LEDs continue to flash red, the charger is defective and requires service. If all indicators are flashing red, there is a power supply problem and the charger requires service.

9.6.4.3Power LED Does Not Light Up

•Remove all batteries, and unplug the charger.

•Connect another device to the mains outlet to ensure there is power.

•Remove the IEC mains power cable from the charger, and check it for damage.

Psion Teklogix WORKABOUT PRO With Windows Mobile 2003 SE User Manual 291