Chapter 9: Specifications
High-Capacity Battery Pack
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Psion Teklogix WORKABOUT PRO Hand-Held Computer User Manual
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
Max. Fast Charge Time
5.0 hrs
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)
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
35m
Ω
max. @ 1kHz AC only the battery cell
Total Internal Resistance
210 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)
