Psion Teklogix Schnellstart- Anleitung 7525 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