Specifications
Page 7 of 30
057-231 ISSUE: 2
2.3.2
BATTERY TEMPERATURE COMPENSATION
NOTE: For further details of PC Configuration, refer to DSE Publication:
057-159
DSE94xx Battery Charger Series Configuration Suite PC Software Manual.
When suitably configured, the external PT1000 temperature sensor is used to monitor battery
temperature. As battery temperature increases, the output voltage is lowered as configured to suit the
battery requirements.
For example, the following Temperature to Voltage compensation curves are used for the pre-set
battery types. For custom battery types, the temperature compensation curve is user configurable.
NOTE: In the below chart, VRLA (Gel), Lead Acid Antimony and Wet Vented are
superimposed on each other for most of the curve.
Calcium and VRLA (AGM) are superimposed on each other for most of the curve.
Example:
A Lead Acid battery at 40 ºC is charged at 2.18 V per cell.
The same Lead Acid battery at 0 ºC is charged at 2.30 V per cell.
1.9
2
2.1
2.2
2.3
2.4
2.5
-20
-10
0
10
20
30
40
50
V
o
lt
s
/C
e
ll
Temperature (ºC)
Battery Temperature Float Voltage Compensation
Calcium
Lead Acid Antimony
VRLA(AGM)
VRLA(GEL)
Wet Vented Lead Acid
NiCd 10/20
NiCd 9/18
