Whisper Power Supreme WP-BC 12/100-3 User Manual page 16

16 WhisperPower Battery Charger
The charger will automatically restart the full charging cycle if it senses any one of the battery banks is
discharged to lower than 12.5V or after seven days in float stage to refresh the battery banks.
Understanding the Two-Stage (Mode 2) Charging:
The Two-Stage charging is similar to the Three-Stage charging except there is no float stage after the
absorption stage. The charger will terminate the battery charging after Absorption.
The charger will automatically restart the full charging cycle if it senses any one of the battery banks
is discharged to lower than 12.5V, or after seven days since the last Absorption stage, to refresh the
battery banks.
Understanding the Battery Temperature Functions:
The optional Battery Temperature Sensor (Part Number 60201202) is highly recommended with the
charger to protect your battery and provide better charging voltage accuracy. It is recommended to be
installed on the main battery bank - Bank 1.
The sensor senses the battery temperature and will override the manual temperature setting and make
small adjustments to the charging voltage.
Battery
Temperature
< 25 °C
25 °C
> 25 °C
When the battery sensor is not in use, you can also manually set the battery temperature. There
are three manual battery temperature settings on the unit ('Lo', 'nor' and 'hi'). See below for
voltage adjustments for temperature compensation.
Temperature
Setting
Low (Lo)
Normal (nor)
High (HI)
Procedure to set or view the charger setting:
Follow the procedure or sequence in Appendix A1-A3 to set or view the charger setting.
For GEL, AGM, Flooded or Program battery type:
Parameters below are required for setting:
• Battery type (GEL, AGM, Flooded or Program)
• Bulk/Absorption and Float voltage setting for Program battery type only. (Default values
14.4/13.5V)
• Maximum Current setting and Absorption to float stage current setting (see table below)
• Charging stage (Mode 3: 3-stages, Mode 2: 2-stages)
• Battery temperature for GEL, AGM, and Flooded battery type only
The following table shows the maximum available charging current and its related available
12 V 100 A
Battery Charging Voltage Adjustment from 25 °C normal setting
Flooded and GEL type
+ 0.027 V /°C
0 V
- 0.027 V /°C
Recommended
for Battery Battery Type
Temperature
GEL, Flooded
<5°C
(41°F)
GEL, Flooded
>5°C and <30°C
(>41°F and <86°F)
GEL, Flooded
>30°C
(86°F)
AGM type
+ 0.021 V /°C
0 V
- 0.021 V /°C
Voltage adjustment from
25°C normal setting
+ 0.675 V
AGM + 0.525 V
AGM
- 0.27 V
AGM - 0.21 V
0 V
0 V