User Guide

Chapter 10: Specifications
High-Capacity Battery Pack
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Psion Teklogix WORKABOUT PRO With Windows Mobile 2003 SE User Manual
10.4.2 High-Capacity Battery Pack
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 45m¾ max. @ 1kHz AC only the battery cell
Total Internal Resistance
200 m ¾max., 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
Max. Discharge
Current
1.7A (-10° C to 60° C) -- (14° F to 140° F)
0.5C (-20° C to 60° C) -- (-4° F to 140° F)
Charge Algorithm CC to CV
Max. Charge Voltage 4.2V +/- 0.05V
Max. Charge Current 900 mA
Discharge Cut-off 2.6V min – DS2761 protection circuit initiates
Recommended
Fast Charge
2325 mA for 4.0 hrs