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Chapter 6: Peripheral Devices & Accessories
Troubleshooting
218 Psion Teklogix 7530 G2 Hand-Held Computer User Manual
The LED directly below the slot in which a battery is inserted lights up immediately.
A solid yellow LED indicates that the battery is being charged. If the battery
temperature is outside
5° C to 39° C (41° F to 102° F), the LED flashes yellow until the
temperature is acceptable. A fully discharged battery will normally take between 1.5
and 4 hours to charge. When the battery charge reaches 75%, the indicator flashes
green. At full capacity, it turns solid green.
When the battery is fully charged, the charger stops applying power; the battery
cannot be overcharged if left in the charger slot. The 75% charge indicator is handy
if you need a quick recharge – it often occurs after less than an hour.
6.5.5 Troubleshooting
6.5.5.1 Excessive 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.
A complete battery discharge takes between 1.5 and 4 hours to complete. When in
discharge mode, the LED indicator flashes yellow. The recalibration function
extends the charge time by up to 2 hours.
6.5.5.2 Indicator 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 slot 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.