Psion Teklogix WORKABOUT PRO Hand-Held Computer User Manual
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Chapter 9: Specifications
High-Capacity Battery Pack
9.4.2 High-Capacity Battery Pack
Charge Temperature
0˚ C to 45 ˚C (32˚ F to 113˚ F)
Discharge Temperature
-20˚ C to 60˚ C (-4˚ F to 140˚ F)
Recommended Termination
Taper Current
50 - 100 mA
Recommended Charge
Termination Timeout
30 min.
Charge Temperature
0˚ C to 45 ˚C (32˚ F to 113˚ F)
Discharge Temperature
-20˚ C to 60˚ C (-4˚ F to 140˚ F)
Storage Temperature
-20˚ C to 60˚ C (-4˚ F to 140˚ F) Storing battery at elevated
temperatures is not recommended.
Cycle Life
300 cycles minimum with no degradation below 80% of
nominal capacity based on standard charge / standard discharge
rates (to 2.8V) @ 25ºC
Impedance
45m
Ω
max. @ 1kHz AC only the battery cell
Total Internal Resistance
200 m
Ω
max., fully charged new pack (including cell resis-
tance and protection circuit resistance) @ 1kHz AC
High Temperature Recovery
>60% nominal capacity after 20 days @ 60˚ C (full charge) --
(140˚ F)
Low Temperature Recovery
>80% nominal capacity after 72 hours @ -20˚ C (full charge) --
(-4˚ F)
Capacity recovery
-20˚ C to 60˚ C (-4˚ F to 140˚ F) >80% capacity recovery
within 1 month
-20˚ C to 45˚ C (-4˚ F to 113˚ F) >75% capacity recovery
within 3 month
-20˚ C to 20˚ C (-4˚ F to 68˚ F) >70% capacity recovery within
1 year
Chemistry Capacity
Lithium Ion Polymer Battery (Li-Polymer)
2625 mAh nominal at 350mA discharge 20 °C (68˚ F) to
2.8V(minimum)
1800 mAh nominal at 300mA discharge at –20 °C to
2.8V (minimum)
Voltage
3.7V nominal (2.8V min. to 4.2V max.)
Cell Configuration
1S3P (3 parallel connected cells)
Cell Type
Lithium-ion Polymer Battery
